Products

Used ZWO OAG-L off-axis guider.  Excellent condition.

Variable polarizing filters are one of the best filters you can have for a telescope.  They are used to cut down the glare from the moon and bright...

The 1.25-Inch variable Polarizing filter acts like a dimmer switch for your telescope. Adjust the amount of light transmission from 1% to 40% by ro...

  INCLUDED ITEMS: -dovetail bar-curved radius blocks-all necessary mounting hardware Fits all Celestron 11″ OTA’s including CPC and HD models. Cur...

Fits all Celestron 11″ OTA’s including CPC and HD models. Curved radius blocks and mounting hardware include. Uses existing mounting holes in OTA....

Fits V Series dovetail bars. Adds additional weight for balancing OTA’s. Split clamp design grips the dovetail bar along the entire surface of the ...

Fits V Series dovetail bars. Adds additional weight for balancing OTA’s. Split clamp design grips the dovetail bar along the entire surface of the ...

Telescope and spotting scope vibration is caused by windy conditions, an unsteady mount or tripod or even an accidental bump to the instrument, and...

Virtual View - The Visual Back with a Twist! Have you ever been to a star party with both kids and adults and wished you had an easy way to adjust ...

Virtual View - The Visual Back with a Twist! Have you ever been to a star party with both kids and adults and wished you had an easy way to adjust ...

  130mm aperture for bright, bold views  Fast f/5 optics for increased light gathering power  650mm focal length perfect for viewing the Moon, p...

Standard visual back as included with Celestron SCTs. Adapts 1.25" accessories (such as diagonals, camera adapters, etc.) to the standard SCT threads.

Vixen's newer refractors have a fine-focus mechanism that is attached to the existing focuser pinion by a thin metal plate. This plate is a weak po...

Fits all Meade 8″ OTA’s. Uses existing accessory mounting holes in the OTA. No curved radius blocks are needed. Uses existing mounting holes in OTA...

Universal Vixen style dovetail plate 14 inches long. Wt. 1.3 lbs., Length 14.0", thickness 0.6"

Specially prepared to mark the Fifth Anniversary of the launch of the James Webb Space Telescope. Calendar features: Large format, lots of room to...

Baader Wide-T-Ring Canon R to connect Canon EOS R cameras on the Astro T-2 system and S52 dovetail All Baader Wide-T-rings have an S52 dovetail i...

Serving up 58 calorically/nutritionally important wild edibles for the prepper, plant utilitarian, or curious hiker/camper, Wild Edible Plants of ...

"Wildflowers of Southeast Arizona: People exploring nature in Southeast Arizona can use this handy photographic field guide to identify common nati...

  X-Cel LX eyepieces, optimized for planetary viewing, offer a 60° field of view through a six-element fully multi-coated lens system Pop-up rubbe...

  X-Cel LX eyepieces, optimized for planetary viewing, offer a 60° field of view through a six-element fully multi-coated lens system Pop-up rubbe...

  X-Cel LX eyepieces, optimized for planetary viewing, offer a 60° field of view through a six-element fully multi-coated lens system Pop-up rubbe...

  X-Cel LX eyepieces, optimized for planetary viewing, offer a 60° field of view through a six-element fully multi-coated lens system Pop-up rubbe...

  Quality X-Cel LX 3x Barlow triples the magnification of any 1.25” eyepiece, perfect for owners of fast, short focal length telescopes 3-element ...

  X-Cel LX eyepieces, optimized for planetary viewing, offer a 60° field of view through a six-element fully multi-coated lens system Pop-up rubbe...

  X-Cel LX eyepieces, optimized for planetary viewing, offer a 60° field of view through a six-element fully multi-coated lens system Pop-up rubbe...

X-Cel LX eyepieces, optimized for planetary viewing, offer a 60° field of view through a six-element fully multi-coated lens system Pop-up rubber...

ZWO Atmospheric Dispersion Corrector is used to reduce the effect of atmospheric dispersion on lunar and planetary images The prisms are the cente...

Makes a great fit together with ZWO OAG and ASI Mini Series Cameras. Can also be used for other purposes when an exact focus is required.

Name: Female T2 to T2 (11mm) Thread: M42*0.75 female to female thread Match Model: ASI1600, ASI294, ASI533, ASI183  Size: M42*0.75 Note: Camera in ...

Aircraft Grade Aluminum Thanks to the aircraft grade aluminum, the pier extension features great capac- ity of high-temperature resistance and wear...

M54 Male, to M48 Female, 21mm in length

ZWO adapter: M54 Male to M54 Female, 21mm length 

The thickness of the M42M-M48F 22.5mm extender is 22.5mm. It is an important astronomical accessory for ASI2600MM Pro users who want to connect the...

ZWO 230mm Counterweight Balance Bar for AM5 Mount For payloads heavier than about 28 lbs. (13 kg), the ZWO AM5 Equatorial Mount requires a counterw...

Why AM3N?     AM3N vs AM3 Engineered for simplicity: two cables deliver a clean, efficient setup that gets you imaging faster than ever.   Stra...

Features *Note: The recommended operating voltage for the ZWO Harmonic Equatorial Mount is 12V. When the actual input voltage is bel...

  ASI120MINI Camera Sensor The ASI120MM Mini camera integrates the AR0130CS 1/3″ sensor (4.8 mm x 3.6 mm). It is a new model in the “mini”-se...

ASI174MINI ASI174MM Mini camera integrates Sony IMX174LLJ / IMX174LQJ 1/1.2″ sensor (11.3 mm x 7.1 mm). It is the first model in the “mini”-series ...

Our popular ASI174MM CMOS Monochrome Imaging Camera is based on the Sony Exmor IMX174 2.35MP sensor with Pregius global shutter technology. Sony...

Introducing the ASI183 camera series, the most sensitivie cameras in ZWO history. Peak Q.E. of the mono sensor reaches 84%! Diagonal 15.86 mm Appro...

All Pro cameras (with cooler) need to be connected to an external 11-14v power supply to image.  You can also use ASIAIR to power the cameras. Even...

Introducing the ASI183 camera series, the most sensitivie cameras in ZWO history. Peak Q.E. of the mono sensor reaches 84%! Diagonal 15.86 mm Appr...

All Pro cameras (with cooler) need to be connected to an external 11-14v power supply to image.  You can also use ASIAIR to power the cameras. Even...

ZWO ASI220MM Mini Monochrome Camera