Alstar - Buying Guide
Last Updated: 03/28/2024
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Alstar Universal Quick Release Finder Shoe Base for Schmidt Cassegrains and Other Telescope 130-400mm Diameter - for MQR III&IV/Witty One and V-Bracket - Black
Asin: B08FWX9SJT | Model: SKU_AM_UQRFSBAS | PartNumber: SKU_AM_UQRFSBAS
【Multi-Function】 There Are Two Elongated Holes On This Base And A Single Countersunk Hole For Screws Up To M5 In The Middle. Two Screws Are On The On Side Of Base. The Spacing Between The Two Screws Is 24 To 41 Mm..
【Practical Funcationality】 Synta-Style Dovetail Base -- Fit Most Bracket Designs From Celestron, Orion, Sky-Watcher, Vixen, Etc. Compliable With Finder Scope, Laser Pointer Bracket On Telescopes..
【Well-Engineered In Shape】 The Base Forms Two Linear Constraints On Each Tube Radius Of 130-400Mm In Diameter, Which Gives Maximum Stability. The Base Also Carries Small Guidance/Ccd Guider Without Any Problem..
【Easy To Install】 Two Large Knurled Thumbscrews Makes It Easy To Install: Bases Feature Two Large Thumbscrew Locks To Secure Your Finder Scope Or Reflex Sight In Place, Even While Wearing Gloves. Just Put It On The Optical Tube And Tighten The Screws..
Features
- Aluminium Alloy Material Made of high strength Aluminum with Anodizing Aluminium Process. Precision machined solid aluminum finder shoe base in matte black, for almost all viewfinder holders, for the "Witty 1" Tangent-attachment etc, fits all lens barrel radii.
- Easy to Install Two large knurled thumbscrews makes it easy to install: Bases feature two large thumbscrew locks to secure your finder scope or reflex sight in place, even while wearing gloves. Just put it on the optical tube and tighten the screws.
- Multi-Function There are two elongated holes on this base and a single countersunk hole for screws up to M5 in the middle. Two screws are on the on side of base. The spacing between the two screws is 24 to 41 mm.
- Well-Engineered in Shape The base forms two linear constraints on each tube radius of 130-400mm in diameter, which gives maximum stability. The base also carries small guidance/CCD guider without any problem.
- Practical Funcationality Synta-style dovetail base -- Fit most bracket designs from Celestron, Orion, Sky-watcher, Vixen, etc. Compliable with finder scope, Laser Pointer bracket on telescopes.
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Brand: A ALSTAR | Manufacturer: Alstar
Dimensions: 3.10 x 1.70 x 1.60 inches | Weight: 0.02 Pounds
See On Amazon #2
Alstar Binocular Tripod Adapter for Roof and Porro Binoculars
Asin: B074FQS9ZM | Model: SKU_AM_TABA | PartNumber: SKU_AM_TABA | Ean: 6970019291710
Simple And Durable, The Mount Tripod Adapter Provides A Rigid And Secure Base Near The Center Of The Roof Binoculars And Eliminate Image-Shake In High-Power Roof Binoculars..
Experience The Fascination Of A Vibration Free Observation With Both Of Your Eyes! For As Long As You Want To, Without Your Arms Getting Tired..
Contrary To Observations With A Spotting Scope Your Observations With Binoculars Will Be Much More Relaxing, Because You Can Use Both Of Your Eyes And Don't Have To Keep One Shut..
Outfitted With A Socket For Tripod-Adaptors, Can Be Connected To Tripods With A 6.35Mm (1/4") Thread Fast And Easily..
Features
- High quality metal material: Solid and steady for one time purchase, long-term use. Fits most binoculars equipped with adapter screws. Helps you view your object with more stability on a tripod.
- Outfitted with a socket for tripod-adaptors, can be connected to tripods with a 6.35mm (1/4) thread fast and easily.
- Simple and durable, the mount tripod adapter provides a rigid and secure base near the center of the Roof binoculars and Eliminate image-shake in high-power Roof binoculars.
- Contrary to observations with a spotting scope your observations with binoculars will be much more relaxing, because you can use both of your eyes and don't have to keep one shut.
- Experience the fascination of a vibration free observation with both of your eyes! For as long as you want to, without your arms getting tired.
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Brand: A ALSTAR | Manufacturer: Alstar
Dimensions: 2.00 x 5.40 x 2.00 inches | Weight: 0.14 pounds
See On Amazon #3
Alstar 1.25" Astrophotography Flip Mirror with Eyepiece Adapter - The flip Mirror for Precise Focusing
Asin: B074FHW712 | Model: SKU_AM_AFMA | PartNumber: SKU_AM_AFMA | Ean: 6970019291581
Always Sharp: If You Tilt The Mirror To The 45° Position, The Object Will Then Appear In The Eyepiece And You Will Be Able To Precisely Focus It As Usual. The Helical Focuser On The Flip Mirror Lets You Make The Eyepiece And Camera Exactly Parfocal With Each Other. This Means That Both Elements Will Be In Focus At The Same Time..
An Advantage With All Cameras: No Finder Is Provided With Popular Webcams Or Astronomical Ccd Cameras For Helping Position The Object On The Chip. Only By Taking Test Exposures Is It Possible To Achieve Both Sharp Focus And The Correct Object Position. The Flip Mirror Is A Big Help Here As The Object Has Already Been Centred And Focused 'Remotely' On The Chip Via The Eyepiece..
Connectability: The Alstar Flip Mirror Has A 1.25" Connector Which Will Fit Onto Any Standard Telescope. The Helical Focuser Will Accept Any Standard 1.25" Eyepiece. There Is A T-2 Thread Provided On The Camera Side - The Standard Fitting For All Cameras..
For Precise Focusing: In Astrophotography, If You Want To Take Successful Astronomy Photographs, Accurate Focusing Is Only One Half Of The Story. The Alstar Flip Mirror Makes It Very Simple To Find Both The Exact Focus Point And Also The Correct Positioning For Your Astronomy Photographs. This Small Black Box Has A Moveable Flip Mirror Which Shunts The Light Path 90°Upwards Or, Alternatively, Lets It Pass Through Unhindered..
Features
- An object that is accurately centred in the eyepiece will be simultaneously centred in the camera's field of view. You no longer have to worry about whether the object is correctly positioned on the chip - you know it will be.
- For precise focusing: In astrophotography, if you want to take successful astronomy photographs, accurate focusing is only one half of the story. The Alstar flip mirror makes it very simple to find both the exact focus point and also the correct positioning for your astronomy photographs. This small black box has a moveable flip mirror which shunts the light path 90 upwards or, alternatively, lets it pass through unhindered.
- Always sharp: If you tilt the mirror to the 45 position, the object will then appear in the eyepiece and you will be able to precisely focus it as usual. The helical focuser on the flip mirror lets you make the eyepiece and camera exactly parfocal with each other. This means that both elements will be in focus at the same time.
- Connectability: The Alstar flip mirror has a 1.25 connector which will fit onto any standard telescope. The helical focuser will accept any standard 1.25 eyepiece. There is a T-2 thread provided on the camera side - the standard fitting for all cameras.
- An advantage with all cameras: No finder is provided with popular webcams or astronomical CCD cameras for helping position the object on the chip. Only by taking test exposures is it possible to achieve both sharp focus and the correct object position. The flip mirror is a big help here as the object has already been centred and focused 'remotely' on the chip via the eyepiece.
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Brand: Alstar | Manufacturer: Alstar
Dimensions: 5.30 x 6.00 x 3.10 inches | Weight: 0.62 pounds
See On Amazon #4
Alstar Anti-Vibration Suppression Pads Telescope Mounts
Asin: B08FSW1C22 | Model: SKU_AM_TMASPAS | PartNumber: SKU_AM_TMASPAS
【Multi-Function】Ideally Suitable For Astronomy, Nature Observations, Photography And Much More. Reduces The Oscillation Time For The Image To Settle Down And Stop Shaking And Muffles The Strength Of Oscillations. During The Shooting, Keep The Tripod Clean. And It Can Withstand Heavier Telescopes..
【100% Satisfaction】We Provide 2-Year Warranty. If You Have Any Question With Our Product, Please Contact Us Freely..
【Practical Design】These Pads Are Sold In Sets Of 3 (One For Each Tripod Leg), The Center Of The Product Is Designed With Different Diameters Of Stripe To Fit Different Sizes Of Tripod. The Orange Rubber Strip In The Middle Has A Buffer Function, Effectively Block The Vibration..
【Prevent Vibrations】These Pads Are Designed To Reduce Vibration Time By Almost 100%. In Future, Save Yourself The Annoyance Of Shaky Images And Get Yourself Some Real Help For Frustration-Free Observing And Astrophotography..
Features
- Practical and Durable The product is of small shape and convenient to carry around. Good quality, long-term use. Sun-proof, water-repellent and washable, anti-slip, moisture-proof.
- Prevent Vibrations These pads are designed to reduce vibration time by almost 100%. In future, save yourself the annoyance of shaky images and get yourself some real help for frustration-free observing and astrophotography.
- Multi-Function Ideally suitable for astronomy, nature observations, photography and much more. Reduces the oscillation time for the image to settle down and stop shaking and muffles the strength of oscillations. During the shooting, keep the tripod clean. And it can withstand heavier telescopes.
- Practical Design These pads are sold in sets of 3 (one for each tripod leg), the center of the product is designed with different diameters of stripe to fit different sizes of tripod. The orange rubber strip in the middle has a buffer function, effectively block the vibration.
- 100% Satisfaction We provide 2-YEAR Warranty. If you have any question with our product, please contact us freely.
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Brand: A ALSTAR | Manufacturer: Alstar
Dimensions: 0.70 x 9.30 x 3.30 inches | Weight: 0.75 pounds
See On Amazon #5
Alstar AccuFocus Electronic Telescope Focuser
Asin: B08L2YYX1Q | Model: SKU_AM_TFAEAS | PartNumber: SKU_AM_TFAEAS
Choose Speeds From Coarse To Very Fine With The Adjustable Speed Control Knob..
Provide Two Different Types Of Focuser Brackets For Fixing To The Pinion Cover..
Use The Pushbutton Hand Controller For Smooth, Precise Focus Adjustments Without Vibration..
Dc Motor Installs Easily And Works With Many Celestron, Skywatcher, Meade And Orion Refractor And Reflector Telescopes..
Features
- Also includes bracket, hardware, and coil cable. Powered by one 9-volt battery (not included).
- DC motor installs easily and works with many Celestron, Skywatcher, Meade and Orion refractor and reflector telescopes.
- Choose speeds from coarse to very fine with the adjustable speed control knob.
- Use the pushbutton hand controller for smooth, precise focus adjustments without vibration.
- Provide two different types of focuser brackets for fixing to the pinion cover.
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Brand: A ALSTAR | Manufacturer: Alstar
Weight: 0.93 pounds
See On Amazon #6
Alstar Alignment 1.25" Next Generation Laser Collimator for Newtonian Telescopes
Asin: B077GRYCK8 | Model: SKU_AM_ZAA1025A | PartNumber: SKU_AM_ZAA1025A | Ean: 6971336221558
The Precision-Made Aluminium Housing Of The Laser Unit Has A Front Opening From Which The Laser Beam Can Be Emitted. In Order To Obtain An Optimal Adjustment, It Has A Side Window Allowing A Disk Oriented At 45° With A Central Hole To Be Viewed.This Can Be Then Later Be Used To See Whether The Laser Is Reflected Back On Itself, Indicating Well Collimated Optics..
Designed For Reflector Telescope, Fit For Standard 1.25 Inch Diameter. Red Laser Collimation Beam With 7 Brightness Levels, Wavelength 635-655 Nm; Output Power: Less Than 5Mw, Much Safer For Your Eyes. This Sturdy Laser Unit Allows You To Swiftly And Precisely Collimate Your Newtonian Telescope. Only When The Optics Have Been Accurately Collimated Can The Telescope Offer You Its Full Performance..
Built With Metal Material. Cr2032 Lithium Cell Battery (Not Include) ; Accurate Collimation In A Few Minutes Provide A More Clearer Image. The Telescope Can Be Collimated By Just One Person..
This Adjustment Tool Can Be Used In All 1.25" Focusers. We Provide You With Precise Instructions In German And English, With A Step-By-Step Explanation Of How To Adjust A Newtonian Telescope Using This Laser Unit. So, Even If You Are A Newcomer To Amateur Astronomy, It Is Very Simple To Get The Optimum Performance Out Of Your Telescope..
Features
- The laser comes fully adjusted. It can however be further adjusted if required. It has three openings for adjustment, arranged at 120 , which are initially sealed. The battery for the laser can be exchanged at any time; the small screw cap at the rear of the laser must be first unscrewed to allow this.
- This adjustment tool can be used in all 1.25 focusers. We provide you with precise instructions in German and English, with a step-by-step explanation of how to adjust a Newtonian telescope using this laser unit. So, even if you are a newcomer to amateur astronomy, it is very simple to get the optimum performance out of your telescope.
- The precision-made aluminium housing of the laser unit has a front opening from which the laser beam can be emitted. In order to obtain an optimal adjustment, it has a side window allowing a disk oriented at 45 with a central hole to be viewed.This can be then later be used to see whether the laser is reflected back on itself, indicating well collimated optics.
- Built with metal material. CR2032 Lithium Cell battery (Not include) ; Accurate collimation in a few minutes provide a more clearer image. The telescope can be collimated by just one person.
- Designed for Reflector telescope, fit for standard 1.25 inch diameter. Red laser collimation beam with 7 brightness levels, wavelength 635-655 nm; Output power: less than 5mw, much safer for your eyes. This sturdy laser unit allows you to swiftly and precisely collimate your Newtonian telescope. Only when the optics have been accurately collimated can the telescope offer you its full performance.
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Brand: A ALSTAR | Manufacturer: Alstar
Dimensions: 1.30 x 5.00 x 1.30 inches | Weight: 0.25 pounds
See On Amazon #7
Alstar 1.25" to 0.965" Adapter - Allow You use 0.965" Accessories on 1.25" Telescope!
Asin: B074FQTCCR | Model: SKU_AM_ZA1T3A | PartNumber: SKU_AM_ZA1T3A | Ean: 6970019291659
Allows You To Use 0.965" Eyepieces In Any 1.25" Telescope Focuser, Star Diagonal Or Holder..
Eyepiece Adaptation: 0.965" (24.5Mm) Inside..
Telescope Eyepiece Adapter..
All Metal Construction And Anodizing Aluminium Process, Durable For Long Time Use..
Features
- Telescope Adaptation- 31.7mm (1.25") male barrel.
- All metal construction and anodizing aluminium process, durable for long time use.
- Allows you to use 0.965 eyepieces in any 1.25 telescope focuser, star diagonal or holder.
- Telescope Eyepiece Adapter.
- Eyepiece Adaptation: 0.965 (24.5mm) inside.
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Brand: Alstar | Manufacturer: Alstar
Dimensions: 1.70 x 1.70 x 3.10 inches | Weight: 0.02 pounds
See On Amazon #8
Alstar 70mm Compact Deluxe Finder & Guidescope Kit with 1.25" Double Helical Focuser - Guiding with The Mini-Guide Scope: So Astrophotography is Easier and Less Equipment
Asin: B07KZMCDD4 | Ean: 6971336228632
Take Any 1.25 Inch Eyepieces In Your Collection, Worm-Focuser: Fast Focusing. Prevents Rotation Of The Camera And Eyepiece. Or Use It As A Comfortable, Large Viewfinder To Waste Less Time Finding Objects In Visual Observation. It Comes With Matching Pipe Clamps And A Synta-Style Mounting Plate To Make Assembly And Installation As Easy As Possible..
Adjustable-Aim Dovany Weight To An Astrophotography Setup And Can Conveniently Be Stashed In An Accessory Case Between Uses. "Dovetail Guide Scope Bracket Installs On Virtually Any Astrophotography Telescope Quickly And Easily..
The Sturdy Metal Housing Made Of Black Anodized Aluminum. Looking Out Not Only Solid, But Is Also Very Robust. A Milled And Knurled Ring Allows Easy And Precise Fine Focus Adjustments..
Have A Built-In Worm-Focuser With Brass Compression Ring And 2 Thumbscrews,90Mm Focusing Range (10Mm Focusing Range With Micro-Focusing Helical Focuser, The Rest Is By A Fixable, Scaled Drawtube) Is Made Possible By An Extremely Precise Focus Adjustment..
Features
- Mini-guide tube to quickly find objects and guiding stars, designed both for visual, as well as for photographic use. 400mm focal length. With bright, wide-field optics puts numerous potential guide stars in view so you'll never have to search for one!
- Have a built-in worm-focuser with Brass Compression Ring and 2 thumbscrews,90mm focusing range (10mm focusing range with micro-focusing Helical focuser, the rest is by a fixable, scaled drawtube) is made possible by an extremely precise focus adjustment.
- Take any 1.25 inch eyepieces in your collection, worm-focuser: fast focusing. Prevents rotation of the camera and eyepiece. Or use it as a comfortable, large viewfinder to waste less time finding objects in visual observation. It comes with matching pipe clamps and a Synta-style mounting plate to make assembly and installation as easy as possible.
- The sturdy metal housing made of black anodized aluminum. Looking out not only solid, but is also very robust. A milled and knurled ring allows easy and precise fine focus adjustments.
- Adjustable-aim dovany weight to an astrophotography setup and can conveniently be stashed in an accessory case between uses. Dovetail guide scope bracket installs on virtually any astrophotography telescope quickly and easily.
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Brand: A ALSTAR | Manufacturer: Alatar
Dimensions: 3.50 x 12.00 x 2.80 inches | Weight: 2.50 Pounds
See On Amazon #9
Alstar T T2 Lens to Fuji FX Mount Camera Adapter and M42 to 1.25" Telescope Adapter (T-Mount) - Universal Screw in for X-T1 X-A1 X-E2 X-M1 X-E1 X-PRO1
Asin: B0779R1KC7 | Model: SKU_AM_T2N1FXTA | PartNumber: SKU_AM_T2N1FXTA | Ean: 6971336220919
All Metal Construction And Anodizing Aluminium Process, Durable For Long Time Use..
Compatible With: Fuji Film Fx X-T1 X-A1 X-E2 X-M1 X-E1 X-Pro1 Camera..
It Is Very Easy To Use. Simply Attach This Adapter To Your Camera The Same Way As You Attach A Lens Then Screw Your T2 Lens Or Accessory Into The Adapter..
Inner Ring Can Be Rotated With A Standard Allen Key (Allen Key Provided) To Ensure Lens Is Always Right Way Up..
Features
- Having the right equipment to shoot art-gallery images of the heavens starts with the right telescope, camera and camera adapter, and ends here.
- Inner ring can be rotated with a standard allen key (allen key provided) to ensure lens is always right way up.
- All metal construction and anodizing aluminium process, durable for long time use.
- It is very easy to use. Simply attach this adapter to your camera the same way as you attach a lens then screw your T2 lens or accessory into the adapter.
- Compatible with: Fuji film FX X-T1 X-A1 X-E2 X-M1 X-E1 X-Pro1 Camera.
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Brand: A ALSTAR | Manufacturer: Alstar
Dimensions: 1.70 x 2.80 x 2.80 inches | Weight: 0.10 pounds
See On Amazon #10
Alstar Finderscope Starpointer for Astronomical Telescopes
Asin: B078JDYRYP | Model: SKU_AM_TRSTBA2 | PartNumber: SKU_AM_TRSTBA2 | Ean: 6971336223453
Includes Bracket That Fits The Dovetail Mounting Base On Many Telescopes..
Simple, Affordable, And Effective Red Dot Sighting Device Makes Aiming Your Telescope A Cinch!.
Brightness Of The Red Dot Is Adjustable To Suit Your Preference. Requires Cr-2032 Lithium Button-Cell Battery (Not Include)..
Thumbwheels Allow Positioning Of The Red Dot Horizontally And Vertically For Precise Telescope Alignment..
Features
- A small red LED dot is projected onto a non-magnifying viewing window so you can aim the main telescope quickly and easily.
- Thumbwheels allow positioning of the red dot horizontally and vertically for precise telescope alignment.
- Includes bracket that fits the dovetail mounting base on many telescopes.
- Brightness of the red dot is adjustable to suit your preference. Requires CR-2032 lithium button-cell battery (Not Include).
- Simple, affordable, and effective red dot sighting device makes aiming your telescope a cinch!
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Brand: A ALSTAR | Manufacturer: Alstar
Dimensions: 1.70 x 5.20 x 3.90 Inches
See On Amazon #11
Alstar Astronomical 2"/M48-extension Tube Kit for Cameras and eyepieces - Length 5mm 8mm 10mm 30mm - M48x0.75 on Both Sides
Asin: B074J7HBT6 | Model: SKU_AM_M48EXT5813A | PartNumber: SKU_AM_M48EXT5813A | Ean: 6970019292069
【Aluminium Alloy Material】High-Quality All-Metal Construction And Anodizing Aluminium Process, Durable For Long Time Use..
【100% Satisfaction】We Provide 2-Year Warranty. If You Have Any Question With Our Product, Please Contact Us Freely..
【Eliminate Extra Light】The Design Of The Internal Thread Can Eliminate Stray Light And Reflected Light, Making The Image Clearer And Perfect.
【Variable Combination】 The Required Spacing Can Be Achieved By Combining Several Extenders Of Differing Lengths,You Can Use 1 Piece, 2 Pieces , 3 Pieces Or 4 Pieces Of The Extension Rings As You Like. Use This Extension Tube For Getting The Correct Image Scale Or The Exact Spacing Required For Reducers Or Field Flatteners..
Features
- Eliminate Focusing Problem The extension tube has a M48*0.75 interior thread and a M48*0.75 exterior thread, elegantly solves the spacing problems in astrophotography and eliminates a series of focusing problems.
- Variable Combination The required spacing can be achieved by combining several extenders of differing lengths,you can use 1 piece, 2 pieces , 3 pieces or 4 pieces of the extension rings as you like. Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners.
- Aluminium Alloy Material High-quality all-metal construction and anodizing aluminium process, durable for long time use.
- Eliminate Extra Light The design of the internal thread can eliminate stray light and reflected light, making the image clearer and perfect
- 100% Satisfaction We provide 2-YEAR Warranty. If you have any question with our product, please contact us freely.
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Brand: A ALSTAR | Manufacturer: Alstar
Dimensions: 1.20 x 10.00 x 5.30 inches | Weight: 0.12 pounds
See On Amazon #12
Alstar Metal T-Ring Adapter for C a no n EOS DSLR/SLR (Fits All Ca Non E OS SLR/DSLR Cameras)
Asin: B077GPCQYD | Model: SKU_AM_TRCEA | PartNumber: SKU_AM_TRCEA | Ean: 6971336221367
All Metal Construction And Anodizing Aluminium Process, Durable For Long Time Use..
Ring Attaches Securely To Can On Eos Dslr Or Slr Camera Body And Provides A T-Thread Interface..
Securely Fits Can On Eos 35Mm Dslr And Slr Cameras Via Bayonet-Style Attachment..
Threaded Ring Couples Can On Eos Camera Body To Standard T-Thread On Most Camera Adapters..
Features
- Couples Can on EOS camera body to standard T-thread found on many camera adapters used for astrophotography.
- Threaded ring couples Can on EOS camera body to standard T-thread on most camera adapters.
- All metal construction and anodizing aluminium process, durable for long time use.
- Securely fits Can on EOS 35mm DSLR and SLR cameras via bayonet-style attachment.
- Ring attaches securely to Can on EOS DSLR or SLR camera body and provides a T-thread interface.
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Brand: A ALSTAR | Manufacturer: Alstar
Dimensions: 3.00 x 0.60 x 3.00 inches | Weight: 0.12 pounds
See On Amazon #13
Alstar 1.25" O-III Filter - Produces Near-Photographic Views of The Veil, Ring, Dumbbell and Orion Nebula, Among Many Other Objects
Asin: B0778MLRPW | Model: SKU_AM_OF1A | PartNumber: SKU_AM_OF1A | Ean: 6971336220360
Completely Blocks Virtually All Other Visible Wavelengths Of Light So Views Of Nebulas Are Optimized. Increases Contrast Through Selective Filtration-Anti-Reflection Coated To Prevent Glaring And Ghosting..
1.25" O-Iii Filter Greatly Enhances Contrast During Visual Observation Of Gaseous And Planetary Nebulae In All Sky Conditions. Astrophotographic 1.25" Filter Allows High-Contrast Imaging Even In Areas With Strong Light Pollution..
Especially Useful For Large Aperture Telescopes Through Which The Light Of The Moon Can Be Extremely Overwhelming. Allowing Just For The Double Ionized Oxygen Lines Between 496Nm To 501Nm To Pass Through At 95%..
Not Only Useful At Light-Polluted Sites; The Contrast Is Also Increased At Dark Sky Sites, Can Be Used With All 1.25" Eyepieces. Filter Made From High-Grade Glass With Dichroic Interference And Antireflection Coatings..
Features
- Each Alstar 1.25" O-III Filter is individually inspected and proudly inscribed with the percentage of light transmittance of the two O-III emission lines.
- Not only useful at light-polluted sites; the contrast is also increased at dark sky sites, can be used with all 1.25 eyepieces. Filter made from high-grade glass with dichroic interference and antireflection coatings.
- Completely blocks virtually all other visible wavelengths of light so views of nebulas are optimized. Increases contrast through selective filtration-Anti-reflection coated to prevent glaring and ghosting.
- Especially useful for large aperture telescopes through which the light of the Moon can be extremely overwhelming. Allowing just for the Double Ionized Oxygen lines between 496nm to 501nm to pass through at 95%.
- 1.25 O-III Filter greatly enhances contrast during visual observation of gaseous and planetary nebulae in all sky conditions. Astrophotographic 1.25 filter allows high-contrast imaging even in areas with strong light pollution.
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Brand: A ALSTAR | Manufacturer: Alstar
Dimensions: 0.70 x 2.10 x 1.70 inches
See On Amazon #14
Alstar M48X0.75 (2" Filter) Female to M42X0.75 T / T2 Male Thread Telescope Adapter
Asin: B074FVZ6SC | Model: SKU_AM_M48FM42A | PartNumber: SKU_AM_M48FM42A | Ean: 6970019291567
With It You Can Convert A Male M48 Thread To A Male T2 Thread With Minimum Possible Mechanical Length..
Converts An M48 Male Thread To A T2 Male Thread..
M48-M42. All Metal Construction And Anodizing Aluminium Process, Durable For Long Time Use..
M48*0.75 Female Thread (For 2" Adapter)To M42*0.75 Male Thread Adapter..
Features
- This is a very high quality anodized aluminum adapter.
- M48*0.75 female thread (for 2 adapter)to M42*0.75 male thread adapter.
- With it you can convert a male M48 thread to a male T2 thread with minimum possible mechanical length.
- M48-M42. All metal construction and anodizing aluminium process, durable for long time use.
- Converts an M48 male thread to a T2 male thread.
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Brand: A ALSTAR | Manufacturer: Alstar
Dimensions: 2.00 x 2.00 x 0.10 inches
See On Amazon #15
Alstar Bahtinov Mask Focusing Mask for Telescopes - FM100mm for a Tube Outer Diameter (OD) from 105mm-150mm
Asin: B077FTS49Z | Model: SKU_AM_BFM100A | PartNumber: SKU_AM_BFM100A | Ean: 6971336220964
The Masks Grip The Telescope Tube Gently But Firmly With Three Metal Posts Which Have Non-Scratching Silicon Sleeves To Protect You Valued Telescope Surface. This Prevents Slippage, Whilst Allowing The Mask To Remaining Perfectly Central. Because Of This 3-Post Mounting, The Mask Remains Centered, Whilst Fitting A Wider Range Of Telescopes..
Bahtinov Masks Take The Guesswork Out Of Focusing And Even Get Over The Seeing Conditions As It Is A Mathematical Type Approach To The Task.The Best Focus For Your Telescope Quickly And Easily..
Suitable For Use On All Types Of Telescope - Reflectors, Rafractors, Dobsonians, Mak-Cas And Scts. They Are Made From Precision Laser Cut Enforced Plexiglass, Which Is Stiff And Long Lasting. They Will Never Be Brittle In The Cold, Unlike Some Other Masks Which Are Made From Normal Plastics..
They Are Made From 2Mm Thick Laser Cut Abs And The Securing Screws Are Capped With Soft Plastic So That They Do Not Damage Your Telescope.These High Quality Bahtinov Masks Are Adjustable To Fit A Wide Range Of Optical Tubes, Unlike Masks Which Are Only Able To Fit One Telescope. They Have Adjustment Latitude Of About 105-150Mm, Depending On Model, In Aperture Making Them Very Versatile..
Features
- Please be assured that these focusing masks will work excellently for both reflectors and refractors with whatever focal length. All you need to do is to measure your telescope tube size and choose the right size of the mask (contact us if you are not sure where to measure).
- They are made from 2mm thick laser cut abs and the securing screws are capped with soft plastic so that they do not damage your telescope.These high quality Bahtinov masks are adjustable to fit a wide range of optical tubes, unlike masks which are only able to fit one telescope. They have adjustment latitude of about 105-150mm, depending on model, in aperture making them very versatile.
- The masks grip the telescope tube gently but firmly with three metal posts which have non-scratching silicon sleeves to protect you valued telescope surface. This prevents slippage, whilst allowing the mask to remaining perfectly central. Because of this 3-post mounting, the mask remains centered, whilst fitting a wider range of telescopes.
- Suitable for use on all types of telescope - reflectors, rafractors, Dobsonians, Mak-Cas and SCTs. They are made from precision laser cut enforced plexiglass, which is stiff and long lasting. They will never be brittle in the cold, unlike some other masks which are made from normal plastics.
- Bahtinov masks take the guesswork out of focusing and even get over the seeing conditions as it is a mathematical type approach to the task.The best focus for your telescope quickly and easily.
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Brand: Alstar | Manufacturer: Alstar
Dimensions: 0.10 x 5.10 x 5.10 inches
See On Amazon #16
Alstar 2" to 1.25" Telescope Eyepiece Adapter
Asin: B074FQWFH2 | Model: SKU_AM_ZA2T1TEA | PartNumber: SKU_AM_ZA2T1TEA | Ean: 6970019291611
Great For Performing Lunar And Planetary Viewing In Larger Telescopes..
Ideal For Using High-Power, Low Focal Length 1.25" Eyepieces In A Big 2" Telescope Focuser..
This Is A Very High Quality Anodized Aluminum Adapter That Has Filter Threads At The Bottom For 2" Telescope Filters..
An Affordable Way To Increase The Number Of Eyepieces To Use With Your 2" Focuser-Equipped Telescope..
Features
- Allows you to use 1.25" eyepieces in any 2" telescopes focuser, star diagonal, or holder.
- An affordable way to increase the number of eyepieces to use with your 2 focuser-equipped telescope.
- Great for performing lunar and planetary viewing in larger telescopes.
- This is a very high quality anodized aluminum adapter that has filter threads at the bottom for 2 telescope filters.
- Ideal for using high-power, low focal length 1.25 eyepieces in a big 2 telescope focuser.
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Brand: A ALSTAR | Manufacturer: Alstar
Dimensions: 3.00 x 3.00 x 2.00 inches | Weight: 0.20 Pounds
See On Amazon #17
Alstar 1.25" 45-Degree Diagonal Prism Optical Prism Inside Rather Than a Mirror which Makes Your Image Clear and Sharp
Asin: B074DQP34N | Model: SKU_AM_DP1D45AR | PartNumber: SKU_AM_DP1D45AR | Ean: 6970019299761
More Comfortable Viewing Orientation As You Observe From Above, Filter Thread For Any 1.25" Filter. Accepts Standard 1.25" Eyepieces..
Protective Coating On The Mirror To Ensure A Long Life, Metal Barrel - For Secure Seating In The Focuser..
This Is A Great Diagonal For Daytime Terrestrial Use And Night Time Astronomy Applications For Telescopes Or Spotting Scopes..
1.25" 45-Degree Mirror Star Diagonal For Any Telescope With 1.25" Connector (Not Suitable For Newtonians)..
Features
- High quality optical Prism inside rather than a mirror which makes your image clear and sharp.
- 1.25 45-degree mirror star diagonal for any telescope with 1.25 connector (not suitable for Newtonians).
- More comfortable viewing orientation as you observe from above, filter thread for any 1.25 filter. Accepts standard 1.25 eyepieces.
- This is a great diagonal for daytime terrestrial use and night time astronomy applications for telescopes or spotting scopes.
- Protective coating on the mirror to ensure a long life, metal barrel - for secure seating in the focuser.
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Brand: A ALSTAR | Manufacturer: Alstar
Dimensions: 2.80 x 4.40 x 2.10 inches | Weight: 0.20 pounds
See On Amazon #18
Alstar Stereo Bino Viewer with Plossl 32mm
Asin: B077HKHGDC | Model: SKU_AM_ZVHP32A | PartNumber: SKU_AM_ZVHP32A | Ean: 6971336221688
An Excellent Accessory Which Helps To Reduce Eyestrain. Eyepiece Diopter Scales For Sharp Focus..
Designed To Fit Into A Standard 1.25" Eyepiece Tube..
This Binocular Attachment Features High Quality Bak-4 Prisms For Clearer, Sharper Images..
1.85X And 3X Specially-Designed Barlow Lens Is Included Which Effectively Doubles The Magnification Of Eyepieces Used..
Features
- With two 32mm Plossl Eyepicecs which give the widest viewing field along with extra sharpness and long eye relief.
- 1.85x and 3x specially-designed Barlow Lens is included which effectively doubles the magnification of eyepieces used.
- An excellent accessory which helps to reduce eyestrain. Eyepiece diopter scales for sharp focus.
- This binocular attachment features high quality BAK-4 prisms for clearer, sharper images.
- Designed to fit into a standard 1.25 eyepiece tube.
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Brand: A ALSTAR | Manufacturer: Alstar
Dimensions: 3.20 x 6.40 x 6.10 inches
See On Amazon #19
Alstar M42X0.75 Female to M42X0.75 Female Thread Telescope Adapter - 9mm
Asin: B074J1QS85 | Model: SKU_AM_M42FTM42F9A | PartNumber: SKU_AM_M42FTM42F9A | Ean: 6970019291888
Converts An M42x0.75 Male Thread To A M42x0.75 Female Thread..
This Is A Very High Quality Anodized Aluminum Adapter..
Makes It Possible To Attach M42x0.75 Male Thread And M42x0.75 Male Thread Accessories Together. Such As, You Can Upgrade Your R&P Focuser By Adding "Alstar 1.25" High Precision Double Helical Focuser" To The End Of The R&P Focuser, If There Is M42x0.75 Male Thread On The R&P Focuser. This Adapter Will Play Very Important Part In Connecting "Alstar 1.25" High Precision Double Helical Focuser"And R&P Focuser..
M42x0.75 Female Thread On Both Sides..
Features
- All metal construction and anodizing aluminium process, durable for long time use.
- M42X0.75 female thread on both sides.
- Converts an M42X0.75 male thread to a M42X0.75 female thread.
- Makes it possible to attach M42X0.75 male thread and M42X0.75 male thread accessories together. Such as, you can upgrade your R&P focuser by adding Alstar 1.25 High Precision Double Helical Focuser to the end of the R&P focuser, if there is M42X0.75 male thread on the R&P focuser. This adapter will play very important part in connecting Alstar 1.25 High Precision Double Helical Focuserand R&P focuser.
- This is a very high quality anodized aluminum adapter.
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Brand: A ALSTAR | Manufacturer: Alstar
Dimensions: 0.60 x 2.80 x 2.80 inches | Weight: 0.03 Pounds
See On Amazon #20
Alstar Bahtinov Mask Focusing Mask for Telescopes - FM200mm for a Tube Outer Diameter (OD) from 215mm-260mm
Asin: B077FMLDMX | Model: SKU_AM_BFM200A | PartNumber: SKU_AM_BFM200A | Ean: 6971336221015
The Masks Grip The Telescope Tube Gently But Firmly With Three Metal Posts Which Have Non-Scratching Silicon Sleeves To Protect You Valued Telescope Surface. This Prevents Slippage, Whilst Allowing The Mask To Remaining Perfectly Central. Because Of This 3-Post Mounting, The Mask Remains Centered, Whilst Fitting A Wider Range Of Telescopes..
Bahtinov Masks Take The Guesswork Out Of Focusing And Even Get Over The Seeing Conditions As It Is A Mathematical Type Approach To The Task.The Best Focus For Your Telescope Quickly And Easily..
Suitable For Use On All Types Of Telescope - Reflectors, Rafractors, Dobsonians, Mak-Cas And Scts. They Are Made From Precision Laser Cut Enforced Plexiglass, Which Is Stiff And Long Lasting. They Will Never Be Brittle In The Cold, Unlike Some Other Masks Which Are Made From Normal Plastics..
They Are Made From 2Mm Thick Laser Cut Abs And The Securing Screws Are Capped With Soft Plastic So That They Do Not Damage Your Telescope.These High Quality Bahtinov Masks Are Adjustable To Fit A Wide Range Of Optical Tubes, Unlike Masks Which Are Only Able To Fit One Telescope. They Have Adjustment Latitude Of About 215-260Mm, Depending On Model, In Aperture Making Them Very Versatile..
Features
- Please be assured that these focusing masks will work excellently for both reflectors and refractors with whatever focal length. All you need to do is to measure your telescope tube size and choose the right size of the mask (contact us if you are not sure where to measure).
- They are made from 2mm thick laser cut abs and the securing screws are capped with soft plastic so that they do not damage your telescope.These high quality Bahtinov masks are adjustable to fit a wide range of optical tubes, unlike masks which are only able to fit one telescope. They have adjustment latitude of about 215-260mm, depending on model, in aperture making them very versatile.
- The masks grip the telescope tube gently but firmly with three metal posts which have non-scratching silicon sleeves to protect you valued telescope surface. This prevents slippage, whilst allowing the mask to remaining perfectly central. Because of this 3-post mounting, the mask remains centered, whilst fitting a wider range of telescopes.
- Suitable for use on all types of telescope - reflectors, rafractors, Dobsonians, Mak-Cas and SCTs. They are made from precision laser cut enforced plexiglass, which is stiff and long lasting. They will never be brittle in the cold, unlike some other masks which are made from normal plastics.
- Bahtinov masks take the guesswork out of focusing and even get over the seeing conditions as it is a mathematical type approach to the task.The best focus for your telescope quickly and easily.
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Brand: A ALSTAR | Manufacturer: Alstar
Dimensions: 0.10 x 5.10 x 5.10 inches | Weight: 0.40 pounds
See On Amazon #21
Alstar 0.965" to 1.25" Adapter - Allow You use 1.25" Accessories on 0.965" Telescope!
Asin: B074FSVDJH | Model: SKU_AM_ZA3T1A | PartNumber: SKU_AM_ZA3T1A | Ean: 6970019291642
All Metal Construction And Anodizing Aluminium Process, Durable For Long Time Use..
Telescope Adaptation- 24.5Mm (0.965") Male Barrel.
Eyepiece Adaptation: 1.25" (31.7Mm) Inside..
Allows You To Use 1.25" Eyepieces In Any 0.965" Telescope Focuser, Star Diagonal Or Holder..
Features
- Optical Length (not counting the 24.5mm barrel): about 30mm.
- Allows you to use 1.25 eyepieces in any 0.965 telescope focuser, star diagonal or holder.
- All metal construction and anodizing aluminium process, durable for long time use.
- Eyepiece Adaptation: 1.25 (31.7mm) inside.
- Telescope Adaptation- 24.5mm (0.965) male barrel
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Brand: A ALSTAR | Manufacturer: Alstar
Dimensions: 1.70 x 1.70 x 3.10 inches | Weight: 0.02 pounds
See On Amazon #22
Alstar C Mount to 1.25" Video Camera Barrel Adapter Telescope Astrophotography - for one C-Mount (Male Thread) to 1.25" Eyepiece convertor for telescopes
Asin: B074FXLV7F | Model: SKU_AM_CMAT1A | PartNumber: SKU_AM_CMAT1A | Ean: 6970019291437
For One High Quality C-Mount (Male Thread) To 1.25" (Fit Any Telescope With 1.25" Eyepiece Tube) Eyepiece Convertor For Telescopes..
The Opposite End Of This Adapter Has A C-Mount (1 Inch Diameter With 32 Threads Per Inch) Standard For All "C"Inama Photography Movie Cameras..
Watch The Moon Or Even Local Scenery From Your Living Room Hdtv With A C-Mount Video Cam Or Any Device With A Vga Socket. The Inside Of The Adapter Is Fully Threaded To Minimize Reflections,Made Of Black Anodized Aluminum..
The Telescope Adapter Has A Diameter Of 1.25 Inches For Insertion In Place Of A 1.25 Inch Telescope Eyepiece, Allows The Camera To Be Put Into Standard 1.25" Eyepiece Holders..
Features
- For a 1.25" adapter to use C or CS mount CCTV type cameras with telescopes,threaded to accept standard 1.25" filters.
- The telescope adapter has a diameter of 1.25 inches for insertion in place of a 1.25 inch telescope eyepiece, allows the camera to be put into standard 1.25 eyepiece holders.
- For one high quality C-mount (male thread) to 1.25 (fit any telescope with 1.25 eyepiece tube) eyepiece convertor for telescopes.
- Watch the moon or even local scenery from your living room HDTV with a C-Mount Video Cam or any device with a VGA socket. The inside of the adapter is fully threaded to minimize reflections,made of black anodized aluminum.
- The opposite end of this adapter has a C-Mount (1 inch diameter with 32 threads per inch) standard for all Cinama photography movie cameras.
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Brand: A ALSTAR | Manufacturer: Alstar
Dimensions: 1.60 x 1.60 x 1.50 inches | Weight: 0.04 pounds
See On Amazon #23
Alstar Universal Dovetail Base for Finder Scope - Ideal for Installation of Finder Scope, Green Laser Pointer Bracket
Asin: B07R22G194 | Model: SKU_AM_UDBFSA6 | PartNumber: SKU_AM_UDBFSA6 | Ean: 6971336228755
Fits Factory Drilled Holes On Celestron, Meade, And Orion Schmidt-Cassegrain Telescopes, Attaches Directly To Schmidt-Cassegrain Telescope (Sct) Optical Tube With Included Mounting Hardware..
Ideal For Custom Installation Of Any Finder Scope, Ez Finder Reflex Sight, And Green Laser Pointer Bracket On Any Telescope. Dovetail Base Fits Finder Scope Or Reflex Sight Bracket So You Can Securely Attach An Aiming Device To Any Telescope. Synta-Style Dovetail Base -- Fit Most Bracket Designs From Celestron, Orion, Sky-Watcher, Vixen, Etc. Compliable With Finder Scope, Laser Pointer Bracket On Telescopes..
Drilled (But Not Threaded) To Accommodate Screws Up To 5Mm In Diameter. Center-To-Center Screw Hole Spacing On Your Telescope Must Be From 10.2 To 30.2Mm In Order For This Dovetail Base To Be Compatible..
Compliable With Finder Scope, Laser Pointer Bracket Or Reflex Sight Bracket On Telescopes, Great For Adding A Second Or Third Aiming Device To Your Telescope..
Features
- Made of high strength Aluminum with Anodizing Aluminium Process. The base is made of die-cast metal and features two large thumbscrew locks. Includes two M5 screws.
- Compliable with finder scope, Laser Pointer bracket or reflex sight bracket on telescopes, great for adding a second or third aiming device to your telescope.
- Fits factory drilled holes on Celestron, Meade, and Orion Schmidt-Cassegrain telescopes, attaches directly to Schmidt-Cassegrain Telescope (SCT) optical tube with included mounting hardware.
- Drilled (but not threaded) to accommodate screws up to 5mm in diameter. Center-to-center screw hole spacing on your telescope must be from 10.2 to 30.2mm in order for this dovetail base to be compatible.
- Ideal for custom installation of any finder scope, EZ Finder reflex sight, and Green Laser Pointer bracket on any telescope. Dovetail base fits finder scope or reflex sight bracket so you can securely attach an aiming device to any telescope. Synta-style dovetail base -- Fit most bracket designs from Celestron, Orion, Sky-watcher, Vixen, etc. Compliable with finder scope, Laser Pointer bracket on telescopes.
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Brand: A ALSTAR | Manufacturer: Alstar
Dimensions: 3.10 x 1.60 x 1.70 inches | Weight: 0.10 pounds
See On Amazon #24
Alstar 1.25" Extendable Camera Adapter - for Either Prime-focus Or Eyepiece-projection Astrophotography with Refractors or Reflector Telescopes - Threaded for Standard 1.25inch Astronomy Filters
Asin: B074FRK9XB | Model: SKU_AM_CA1EA | PartNumber: SKU_AM_CA1EA | Ean: 6970019291758
Compatible For Both Reflector And Refractor Telescopes With 1.25" Eyepiece Holders..
The 1.25" Variable Universal Camera Adapter Is Made Of Black-Anodized Aluminum..
This Easy To Use 1.25" Variable Universal Camera Adapter Is Designed To Attach Both Camera Body And Reflector Together..
In Addition, The Adapter Works Well For Refractor Telescopes When In Use For Either Prime-Focus Or Telescope Eyepiece-Projection Photography..
Features
- Dual design allows the user to make slight magnification adjustments without having to change telescope eyepieces.
- In addition, the adapter works well for refractor telescopes when in use for either prime-focus or telescope eyepiece-projection photography.
- Compatible for both reflector and refractor telescopes with 1.25 eyepiece holders.
- This easy to use 1.25 Variable Universal Camera Adapter is designed to attach both camera body and reflector together.
- The 1.25 Variable Universal Camera Adapter is made of black-anodized aluminum.
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Brand: A ALSTAR | Manufacturer: Alstar
Dimensions: 2.40 x 5.10 x 2.40 inches | Weight: 0.35 pounds
See On Amazon #25
Alstar Dovetail Mounting Base with 4 Holes for M4 Screws
Asin: B077GQBSL6 | Model: SKU_AM_ZBDM4A | PartNumber: SKU_AM_ZBDM4A | Ean: 6971336221466
Drilled (But Not Threaded) To Accommodate Screws Up To 4Mm In Diameter. Center-To-Center Screw Hole Spacing On Your Telescope Must Be 18.6Mm (0.76") In Order For This Dovetail Base To Be Compatible..
Fits Any Diameter Telescope Tube Except Schmidt-Cassegrain Telescope Optical Tubes, The Base Is Made Of Die-Cast Metal And Features A Large Thumbscrew Lock. Includes Two M4 Screws..
Compliable With Finder Scope, Laser Pointer Bracket Or Reflex Sight Bracket On Telescopes, Great For Adding A Second Or Third Aiming Device To Your Telescope..
Made Of High Strength Aluminum With Anodizing Aluminium Process. Not Intended For Use On Schmidt-Cassegrain Telescope Optical Tubes..
Features
- Ideal for custom installation of any finder scope, EZ Finder reflex sight, and Green Laser Pointer bracket on any telescope.
- Made of high strength Aluminum with Anodizing Aluminium Process. Not intended for use on Schmidt-Cassegrain telescope optical tubes.
- Drilled (but not threaded) to accommodate screws up to 4mm in diameter. Center-to-center screw hole spacing on your telescope must be 18.6mm (0.76) in order for this dovetail base to be compatible.
- Compliable with finder scope, Laser Pointer bracket or reflex sight bracket on telescopes, great for adding a second or third aiming device to your telescope.
- Fits any diameter telescope tube except Schmidt-Cassegrain telescope optical tubes, The base is made of die-cast metal and features a large thumbscrew lock. Includes two M4 screws.
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Brand: A ALSTAR | Manufacturer: Alstar
Dimensions: 3.10 x 1.70 x 1.60 inches
See On Amazon #26
Alstar 1.25Inch Metal Collimating Cheshire Eyepiece Without Laser for Newtonian Reflector Telescope - Short Version
Asin: B08FSSD5ZC | Model: SKU_AM_MCES1AS | PartNumber: SKU_AM_MCES1AS
Item Was Made By Aluminum With Crosshair At The Bottom Allow Quick And Precise Centering Of The Optics..
For Aligning Optics Of Newtonian Reflectors, Dobsonian Reflectors, And Schmidt-Cassegrain Telescopes (Scts)..
This Collimation Eyepiece Can Be Used For Precisely Collimating The Newtonian And Schmidt-Cassegrain Reflector Telescopes For Better Image Quality..
Fits In 1.25" Focusers And Easy To Use;Simply Cap The Telescope, Remove The Diagonal, And Place The Eyepiece Directly In The Focuser..
Features
- The short collimator for mirror (reflector) telescopes has a 45 degree plate for easier visual accuracy.
- Fits in 1.25 focusers and easy to use;simply cap the telescope, remove the diagonal, and place the eyepiece directly in the focuser.
- Item was made by aluminum with crosshair at the bottom allow quick and precise centering of the optics.
- This collimation eyepiece can be used for precisely collimating the Newtonian and Schmidt-Cassegrain reflector telescopes for better image quality.
- For aligning optics of Newtonian reflectors, Dobsonian reflectors, and Schmidt-Cassegrain Telescopes (SCTs).
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Brand: A ALSTAR | Manufacturer: Alstar
Dimensions: 1.30 x 2.60 x 1.30 inches | Weight: 0.10 pounds
See On Amazon #27
Alstar 2" ED 2X Dual Power Telescope Barlow Lens for Telescopes
Asin: B074CSJ226 | Model: SKU_AM_BL2EDA | PartNumber: SKU_AM_BL2EDA | Ean: 6970019299709
2" 2X Achromatic Barlow Increases The Magnification Of Each Eyepiece And Effectively Doubles Or Triples The Number Of Eyepieces At Your Disposal..
Barlow Element Separates From Extension Tube And Threads Directly Into A 2" Eyepiece For 2X Increase In Magnification..
Full Unit Increases Magnification Of Eyepiece By 2X.Threaded For Use With 2" Filters..
Very High-Quality Barlow That Is Versatile - You Can Unscrew The Lens And Screw It Into Your 2" Eyepiece..
Features
- Two-element, fully-multicoated lenses with excellent color correction, sharpness, and image brightness.
- Very high-quality barlow that is versatile - you can unscrew the lens and screw it into your 2 eyepiece.
- 2 2x achromatic Barlow increases the magnification of each eyepiece and effectively doubles or triples the number of eyepieces at your disposal.
- Full unit increases magnification of eyepiece by 2x.Threaded for use with 2 filters.
- Barlow element separates from extension tube and threads directly into a 2 eyepiece for 2x increase in magnification.
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Brand: A ALSTAR | Manufacturer: Alstar
Dimensions: 3.40 x 6.00 x 3.00 inches | Weight: 0.30 pounds
See On Amazon #28
Alstar Astronomical T2-Extension Tube Kit for Cameras and eyepieces - Length 5mm 8mm 10mm 15mm 20mm 40mm - M42x0.75 on Both Sides
Asin: B074J7Y8SL | Model: SKU_AM_T2EXTK581524A | PartNumber: SKU_AM_T2EXTK581524A | Ean: 6970019292021
Use This Extension Tube For Getting The Correct Image Scale Or The Exact Spacing Required For Reducers Or Field Flatteners..
The Required Spacing Can Be Achieved By Combining Several Extenders Of Differing Lengths,You Can Use 1 Piece, 2 Pieces , 3 Pieces Or 4 Pieces Of The Extension Rings As You Like..
The Extension Tube Has A T2 Interior Thread And A T2 Exterior Thread For Elegantly Solving Spacing Problems In Astrophotography..
All Metal Construction And Anodizing Aluminium Process, Durable For Long Time Use..
Features
- Male thread - M42*0.75. Female thread - M42*0.75,eliminates a range of focusing problems.
- All metal construction and anodizing aluminium process, durable for long time use.
- Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners.
- The extension tube has a T2 interior thread and a T2 exterior thread for elegantly solving spacing problems in astrophotography.
- The required spacing can be achieved by combining several extenders of differing lengths,you can use 1 piece, 2 pieces , 3 pieces or 4 pieces of the extension rings as you like.
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Brand: A ALSTAR | Manufacturer: Alstar
Dimensions: 1.20 x 10.00 x 5.10 inches | Weight: 0.16 pounds
See On Amazon #29
Alstar Short Full Aluminum Prism Rail with Screw - Length 120MM
Asin: B07QYLJXZS | Model: SKU_AM_SFAPR12A | PartNumber: SKU_AM_SFAPR12A | Ean: 6971336228908
This Solid Dovetail Plate Allows You To Attach Heavy Cameras, Spotting Scopes, Telephoto Lenses... To An Astronomical Mount. One Screw Is Included..
The Elongated Hole Offers A Great Versatility, For Instance You Can Also Use It For Attaching A Telescope With A Pair Of Tube Rings - Very Helpful For Short Tube Telescopes..
Vixen-Style Dovetail Plate For Cameras. Black Anodized, Machined Aluminum Construction For Added Rigidity, Durable Surface And Professional Look..
Elongated Hole Allows You To Balance The Camera On The Dovetail Plate. Attach All Manner Of Accessories Including Rings And Cameras With A Tripod Socket. Comes With One 1/4" Screw..
Features
- The Alstar Short Full Aluminum Prism Rail is a particularly sturdy dovetail plate. Fits narrow "Vixen-style" saddles. Connects cameras to astronomical mounts with Vixen GP-style quick release system.
- Elongated hole allows you to balance the camera on the dovetail plate. Attach all manner of accessories including rings and cameras with a tripod socket. Comes with one 1/4 screw.
- This solid dovetail plate allows you to attach heavy cameras, spotting scopes, telephoto lenses... to an astronomical mount. One screw is included.
- Vixen-style dovetail plate for cameras. Black anodized, machined aluminum construction for added rigidity, durable surface and professional look.
- The elongated hole offers a great versatility, for instance you can also use it for attaching a telescope with a pair of tube rings - very helpful for short tube telescopes.
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Brand: A ALSTAR | Manufacturer: Alstar
Dimensions: 0.60 x 4.70 x 1.70 inches | Weight: 0.30 pounds
See On Amazon #30
Alstar Middle-Sizes Dovetail with one Screw - for telescopes and Cameras
Asin: B077GPSKYS | Model: SKU_AM_ZBDM2A | PartNumber: SKU_AM_ZBDM2A | Ean: 6971336221473
Areal Clamping - Protects The Accessories And Provides A Very Stable Connection, Two Drilled (But Not Threaded) In The Middle With To Accommodate Screws Up To 6Mm In Diameter, Center-To-Center Screw Hole Spacing Is From 27 To 43Mm..
Simply Screw The Dovetail Clamp Onto Your Photo Tripod Or Tripod Head, And You Can Mount Your Telescope On The Tripod..
A Generously Dimensioned Surface With 25 Mm Width Presses The Bar Against The Othe Side Of The Clamp..
For Attaching The Clamp, 7 Bores Are Available For M6 And 1/4" Screws. Four M6 Bores At 38 Mm Distance Square, One M6 Bores Lengthwise. One 1/4" Tripod Thread In The Middle With Two Drilled (But Not Threaded) To Accommodate Screws Up To 6Mm In Diameter, Center-To-Center Screw Hole Spacing Is From 27 To 43Mm. All Functions, Especially The Clamping, Are Completely Kept. The Clamping Screw Can Be Used Without Problems..
Features
- The clamp itself can be adapted to a mount, to the counterweight shaft or another dovetail bar, building a double connection.
- For attaching the clamp, 7 bores are available for M6 and 1/4 screws. Four M6 bores at 38 mm distance square, one M6 bores lengthwise. One 1/4 tripod thread in the middle with two drilled (but not threaded) to accommodate screws up to 6mm in diameter, center-to-center screw hole spacing is from 27 to 43mm. All functions, especially the clamping, are completely kept. The clamping screw can be used without problems.
- Areal clamping - protects the accessories and provides a very stable connection, two drilled (but not threaded) in the middle with to accommodate screws up to 6mm in diameter, center-to-center screw hole spacing is from 27 to 43mm.
- A generously dimensioned surface with 25 mm width presses the bar against the othe side of the clamp.
- Simply screw the dovetail clamp onto your photo tripod or tripod head, and you can mount your telescope on the tripod.
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Brand: Alstar | Manufacturer: Alstar
Dimensions: 2.00 x 4.40 x 2.60 inches
See On Amazon