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Baader H-alpha / O-III / S-II Narrowband Filter Set - Precision Grade 6.5 nm FWHM, recommended for optical systems from f / 10 to f / 3.5 Reflex-...

The DWARF mini redefines portability in a smart telescope.  At only 1.85 lbs (840g), it's the smallest in the world, yet it delivers unparalleled e...

Starizona's autofocus and accessory kit for the Askar 50P enhances this already adorable telescope. The autofocus bracket works with the ZWO EAF an...

Enjoy better views through your telescope with this premium diagonal featuring diffraction-limited optics and dielectric coatings Provides a 90° ...

 The Askar 140APO is an OTA with a 140mm aperture, 980mm focal length, and f/7 native focal ratio.   The aperture of 140mm gives it an inherent adv...

The PhotoSol Orbit HEPA Blower is the only blower approved by NASA for use on the International Space Station’s instrument sensors. Use the Orbit ...

Users are often racked by the task of choosing and matching dazzling filters as well as adapters when it comes to using a filter drawer. It just be...

This version of the Counterweight Set will only work with the CPC-800. For other Celestron 8" SCTs, click here.Accurate balance is necessary for th...

Looking to permanently mount your CPC telescope? You'll want this adapter kit to easily attach the CPC fork mount to a permanent pier. The top plat...

This adapter threads into the front (telescope side) threads of the SkyWatcher EvoStar ED focal reducer, allowing the reducer to be placed directly...

Works on AZ-EQ6 and ZWO AM7 Counterweight Shafts 11lbs

CNC machined secondary spider made of aluminum (EN AW-6061), black matt anodized, suitable for 8" TS-Optics GSO Photon This secondary spider is ma...

CNC machined secondary spider made of aluminum (EN AW-6061), black matte anodized, suitable for TS-Optics GSO Photon 6" This secondary spider is m...

Product introduction Welcome to our...

Our 2-piece Bahtinov focusing mask is easy to install with a HyperStar and camera in place, even with camera cables in the way.  The two halves sna...

42,000 object data base Built-in USB-B 2.0 port for easy control via PC or firmware updates Only compatible with Sky-Watcher SynScan mounts In...

Antlia OIII EDGE narrowband filter optimizes the FWHM (full width half maximum) to 4.5nm bandpass. The suppression of optical density (OD)5 on unwa...

Additional threaded 2.5-pound bottom counterweight for Starizona counterweight sets (for NexStar GPS and CPC telescopes). Necessary for heavy loads...

A filter for enchanced H-alpha nebula observations with UV/near IR suppressiong function - especially removing red end spectrum interference. The H...

With the upgrading of electronic astronomical accessories, electronic devices are more and more widely used in astronomical observation and astroph...

IDAS NB3-PM: PM stands for Passband Modification  Nebula Booster NB3-PM filter for OIII and SII the NB3, OIII and SII emission lines respectively. ...

Use this adapter to connect a T-ring or T-mount camera to a 2" focuser. Low profile design keeps backfocus short. Threaded for 48mm filters.

This 3D printed case will hold our Origin filter drawer and a mounted filter, keeping the filter clean and safe and ready to go between sessions.  ...

Sky-Watcher’s SynScan USB brings older Sky-Watcher mounts into the 21st century, by eliminating the need for outdated serial connections. For thos...

Antlia H-alpha EDGE narrowband filter optimizes the FWHM (full width half maximum) to 4.5nm bandpass. The suppression of optical density (OD)5 on u...

The latest book by noted astronomer David Levy (do-discoverer of the Shoemaker-Levy comet which slammed into Jupiter in 1994. This book, geared tow...

To achieve true dynamic balance with a fork-mounted SCT, both top and bottom weights are required. See stock number CWCPC11-CS for the complete top...