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Bob's Knobs for Celestron 5" SCT A. Knobs for C5 f/10 Secondary with Standard Collimation Screw ThreadsPart Part: C5stdFits: Celestron 5” (13 cm) ...

Pegasus Adapter M54 Male to M48 Female Adapter Thickness: 2.0mm Thread: Pitch 0.75mm / 4 mm length In the Box Peagsus Adapter M54 Male to M48 Fe...

Bob's Knobs for Celestron 9.25” SCT  A. Knobs for C9.25 f/10 Secondary with Standard Collimation Screw Threads Part: C9.25stdFits: Celestron 9.25”...

Askar 0.7x Universal Reducer for 107PHQ/130PHQ/151PHQ Askar’s new-launched 3” 0.7x full-frame reducer adapts for 107PHQ, 130PHQ & 151PHQ. It ha...

Bob's Knobs for Celestron 6” SCT  The knobs below will fit almost all versions of the Celestron 6” Schmidt-Cassegrain secondary. Price is for a com...

SVBONY SV161 1.25inch Double Helical Micro Focuser  The SVBONY Helical Focuser allows for precise focusing of eyepieces or cameras. It is ideal ...

SVBONY Metal Dovetail Base and Mounting Plate Setfor Finder Scopes Compliable with finder scope;reflex sight bracket on telescopes;great for addin...

Astroasis CAA Camera Angle Adjuster Camera Angle Adjuster designed to meet the needs of astrophotograpy angel selection, with 360 degree free rotat...

Buckeye Desiccant Caps These simple Desiccant Caps will keep your scope dry while stored.  Available in the following formats:     * Focuser Insert...

Player One Photosphere 7.5nm 1.25″ Filter E-series  Player One E-series is an upgrade series of S-series, using high quality optical glass substrat...

Player One Apollo-M MINI USB3.0 Mono Camera IMX429 Focus on Solar imaging! Apollo series is the world’s first camera line designed specifically for...

William Optics 1.25" DURA BRIGHT Dielectric Diagonal Introducing New model William Optics Dura-Bright diagonal - a dramatic step forward in the evo...

Mars-C II USB3.0 Color Camera (IMX662) Design for planetary imaging and EAA! Now, a new member join in Mars series, its name is Mars-C II (IMX662) ...

Askar 200mm Universal Vixen-style Dovetail Plate The VDP200 Askar Universal Vixen-style Dovetail Plate offers the advantage of increased versatilit...

Pegasus EQ6 Universal Adapter for the NYX-101 Mount A pier extension (+18 cm / 7” is available). The pier can be easily constructed by purchasing t...

Antares M48-M42 Camera Adapter M48-M42 reduces female M48 to female M42 In the Box Antares M48-M42 Camera Adapter Warranty & Manuals Antares ...

Celestron 5MP Digital Microscope Imager Turn your traditional microscope into a digital microscope with the Celestron 5MP Digital Microscope Imager...

Baader T-2 adjustment/spacer-rings Altogether 15 pc - in 5 sizes, three rings per size (thickness 0.6/0.8/1.0/1.2/1.4mm) Well suited to tune the r...

Baader FlipMirror II Star Diagonal Baader-FlipMirror II Star Diagonal (BFM II) with three ports: Straight-through (S52, M48 and T-2 on both sides...

Baader Double Polarizing Filter Baader Double Polarizing Filter Screws into 1¼ or 2" eyepieces/threads. The two filters can be rotated relative to ...

Baader Diamond Steeltrack T-2 Adapter BDS-Adapter with T-2 outer thread to connect T-2 parts Mounted instead of the standard clamp with the S58 do...

Antlia IR Pass 685nm planetary 1.25" filter The Antlia IR Pass 685nm filter is an absorptive filter that allows infrared light with wavelengths of ...

Antares Finderscope 50mm Correct Image - 60° AFOV The Antares FRE50WT features correct image right angle viewing with a helical focus wire-x ...

Antares W70 15mm 70° The Antares W70 15mm 70° does not have negative achromat compensation, and is recommended only for telescopes with a high f/ra...

Antares SCT Adapter Twist-Lock 2" Tired of threading your Schmidt-Cassegrain accessories on and off? Switch to a smooth 2" barrel with a T2TL Twist...

Antares M42 Camera Adapter 1.25" DP1 adapts your 1.25" focuser or diagonal directly to M42 T-Thread. Threaded for filters.   In the Box Antares M42...

Antares 1.25" 45° Erecting Prism Diagonal EID45 is a 1.25" 45 degree erecting amici prism for terrestrial viewing and is not recommended for high m...

Antares 0.5x 1.25" Focal Reducer Focal reducers can be used either visually or photographically to decrease focal length and increase true field at...

ZWO ASI294MM Pro Mono Cooled ASI294MM Pro is a back-illuminated, 4/3” format, 14-bit ADC camera with 4.63um pixels. It is the mono version of ASI29...

ZWO 2" Filter Drawer for Nikon Lenses ZWO 2" Filter Drawer with a thickness of 29mm that can be used for carrying 2” filter and connecting ASI cool...

William Optics 48mm T mount for Sony E - Black In the Box William Optics 48mm T mount for Sony E - Black Warranty & Manuals William Optics ...

Tele Vue Eyeguard Extender Many of our eyepieces, such as Radians, Delos, Nagler type 4, 55 Plössl, 41 Panoptic have adjustable height eyeguards t...

Tele Vue Ethos 13mm The Tele Vue Ethos 10mm is parfocal with the Tele Vue Ethos 13mm. Its 59mm rubber grip diameter makes this model usable in bin...

Sky-Watcher SynScan GPS Module SynScan GPS module inputs date, time and location data into the SynScan hand controller.Compatible with all mounts u...

Tele Vue 4.0x 2" PowerMate T-Ring Adapter The Tele Vue 4.0x 2″ PowerMate T-Ring Adapter allows imaging through 4.0x 2″ PowerMate lens assemblies. T...

Sky-Watcher Quattro Coma Corrector Delivers stunning wide-field views with pinpoint stars to the edge of the field. Magnification remains unalte...