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Daystar Combo Quark 2.8X Telecentric Barlow This  brand new QUARK optimized accessories is designed to fit our classic Combo Quark Hydrogen Alpha F...

Daystar Combo Quark 4.3X Telecentric Barlow This  brand new QUARK optimized accessories is designed to fit our classic Combo Quark Hydrogen Alpha F...

Takahashi Aluminum Mounting Plate 100 The KA11424 is intended to be mounted atop Takahashi's 95WB tube rings. Its primary function is to reduce fle...

Pegasus Adapter 3.29 inches (For SCTs C11, C14) Female to M68M Adapter 3.29 inches (For SCTs C11, C14) Female to M68M  Technical Specifications ...

Baader VIP 2x Modular Barlow Lens The Baader Planetarium VIP Modular Barlow is a complete high quality 2X photo-visual barlow system. The VIP (VIsu...

Antares Filter Neutral Density 13% - USED This filter is in excellent condition. Neutral density filters can reduce brightness across the visu...

Askar SQA55 Quick-Release Handle Bar All metal material, overall length 110mm.  Features a quick-release design for tool-free installation and ...

Tele Vue Nagler 5.5mm Type 7 Concept The Nagler Type 7 series was developed as a natural extension of our highly regarded, 85°, limited edition Apo...

Tele Vue Nagler 9mm Type 7  Concept The Nagler Type 7 series was developed as a natural extension of our highly regarded, 85°, limited edition Apo...

SVBony SV245 Zoom Eyepiece 8-16mm FOV 63° Parfocal & ClickStop   63°wide field view; immersive views without losing field of view during zoom...

Baader UBVRI Bessel Filters V-Filter – Photometric Baader Bessel-UBVRI Bandpass Filter Set, suitable from f/15 to f/1.8 Classic photometric filter...

Baader UFC S70 / 2" SC-thread (int) Telescope-Adapter Baader UFC S70 / 2" SC-thread (int) Adapter Telescope-side: 2" SC internal thread Camera-sid...

Baader UFC 2" (ext) SC Camera-Adapter Baader UFC 2" SC-Thread Adapter telescope-side: with mounting plate for UFC-Base (screws included) camera-si...

Astronomy Plus M42F to M48M Adapter M42F to M48M metallic adapter. Adds 0 mm of back Focus Technical Specifications Connection Side A M48 x 0.75...

Astronomy Plus 2'' 99% Reflexivity Mirror Diagonal A 2" 90-degree diagonal mirror is an essential upgrade for astronomers using refractor and S...

Baader Flat Base Plate for BDS-NT Diamond Steeltrack Enables mounting of the Baader NT Diamond Steeltrack onto Dobsonians with flat mounting surfac...

Starfield Adjustable Flattener for 80 - 155mm Telescopes The Starfield 1.0x adjustable flattener makes finding the correct back focus easy! Fighti...

Astronomy Plus SCT Female to T2 Adapter  SCT Female ring to T2 (M42M) metallic adapter. Adds 55 mm of back spacing Technical Specifications Conn...

Astronomy Plus M42F to M54M Adapter M42F to M54M metallic adapter. Adds 0 mm of back Focus Technical Specifications Connection Side A M42 x 0.75...

Astronomy Plus M54F to M48F Adapter  M54F to M48F metallic adapter. Adds 0 mm of back Focus Technical Specifications Connection Side A M54 x 0.7...

Astronomy Plus SCT Male to M42M Adapter SCT Male to M42M Adapter Metallic adapter. Adds 2mm of back Focus Technical Specifications Side A : SCT Ma...

ADM V Series 4" Universal Dovetail Bar Fits popular telescope mounts sold by Celestron, Meade, Orion, SkyWatcher, TeleVue, Vixen and more. Slotted ...

Guide Éclair - Insectes du Québec (FR) Dozens and dozens of species found in Quebec are illustrated and briefly explained in these small guides tha...

Guide Éclair - Arbres du Québec (FR) Dozens and dozens of species found in Quebec are illustrated and briefly explained in these small guides that ...

Guide Éclair - Papillons du Québec (FR) Dozens and dozens of species found in Quebec are illustrated and briefly explained in these small guides ...

PrimaluceLab Adapter ESATTO 3" for ARCO 3" Adapter ESATTO 3" for ARCO 3" allows you to connect the rotator to ESATTO 3" microfocuser and control it...

ADM D Series Male to Male Adapter. 12″ Long Male to male dovetail plate. For use of secondary equipment on equatorial mount and DSBS. 12″ Long, 4″ ...

Starfield / Xagyl - 7 x 36mm Filter Wheel Ultra slim motorized filter wheel - only 0.7" thick! Holds 7 x 36mm unmounted filters up to 4mm thick usi...

Askar 160APO 0.8x Full-frame Reducer     The 0.8x reducer can bring Askar 160APO's focal ratio down to F5.6. This is a standard reducer with fi...

Starfield Adjustable 0.8x Universal 2" Reducer Suitable for refractor telescopes from 70 to 102mm aperture with focusers of 2". The Starfield 0.8x ...

Starfield 32mm F4 Guide Scope The Starfield 32mm Guide scope is the perfect solution for ultra-portable imaging setups or Star tracker mounts like ...

Starfield Adapter Plate for Skywatcher Mounts The Skywatcher Pier adapter allows for the HEQ5 and EQ6R mounts to be used with the Starfield Pier. S...

Starfield 3/8'' Adapter Plate Starfield 3/8 pier adapter and tripod adapter for ball heads, tilt heads and AZ mounts   The adapter allows you to co...

Wanderer Astro Losmandy Dovetail Bracket Kit (Short) For WandererCover/WandererBox   Easily mount your WandererCover V4 Pro-EC/Wanderer Eclipse/Wan...

Baader UFC D50 Filter Slider (for round filters Ø 50 mm to 50.5 mm)  Baader UFC Filter Slider / Filter Container D50.4 suitable for unmounted, rou...