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Made from anodized aluminum. This finder base includes two thumbscrews to attach your favorite finder scope. The bottom slot is 34mm wide by 39mm l...

Designed for cleaning CCD, CMOS sensors, or any sensitive surface.  This kit includes:  6x SensorSwab ULTRA Cleaning Swab 1xEclipse Optic Cleaning...

Be prepared for wherever adventure leads with the National Geographic LED Rechargeable Trek-Light that can illuminate your path at distances up to ...

Upgrade your SQA-series telescope with this precision-machined metal extension kit from Askar. Engineered for compatibility with models lik...

Upgrade your Schmidt-Cassegrain or Maksutov-Cassegrain telescope to accept standard 2" accessories. The internal threads create a secure connection...

  T-Adapter for 9.25, 11 & 14” EdgeHD optical tubes. It threads onto the rear cell This T-Adapter allows you to attach your 35 mm DSLR camera...

Concept: Just as Delos eyepieces were developed based on Tele Vue's Ethos eyepiece design advancements, DeLite is the logical step toward a smaller...

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...

The 0.8x reducer can bring Askar 185APO's focal ratio down to F5.6. This is a standard reducer with field flattening capabilities as well. A shor...

40x to 600x magnification, up to 2400x with digital zoom 4.3" LCD touchscreen 5MP CMOS built-in digital camera 5 fully achromatic objective lense...

Eyepieces at or near the 10mm range are often considered a mandatory focal length in your collection, as this focal length range is departure p...

0.92x Field Flattener / Reducer for all APOs 2 Glass Elements ED 55mm Back Focus, adjustable T2 AP85 to 469mm f/5.5 AP95 to 529mm f/5.5 AP106 to 64...

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...

A new generation - the world-first - galaxy and nebula booster filter intended for shooting not only nebulae, but also galaxies by the use of the t...

Finder Charts are printed on white vellum card stock to make them durable. The black printing and stars on a white background makes them easily rea...

Note that this version of the counterweight set will not work with the CPC-800 telescopeTo achieve true dynamic balance with a fork-mounted SCT, bo...

PLAY & LEARN: Professor Noggin’s series of educational card games encourages kids to learn interesting facts about their favorite subjects. F...

Optolong UHC nebula clip filter for Canon EOS full frame cameras! The UHC (Ultra High Contrast) broadband filter is designed to improve the visibi...

Use this adapter to connect a camera with female T-threads to a device with male C-threads. Ideal for using T-thread autoguiders such as the Orion ...

Use this female T-thread to male T-thread spacer to extend standard T-thread adapters to achieve the correct backfocus for your telescope. Availabl...

Easily attach a ZWO EAF to the Sky-Watcher Skymax 200DX with this bracket from Starizona.  3D printed from durable carbon fiber PETG, the bracket c...

O-III Super-G filter with 9 nm FWHM and a maximum transmission of 97%.For visual and photographic observation of planetary nebulae and supernova r...

An authoritative survey of the most common and noteworthy plants found throughout Arizona, this guide covers more than 1,000 species. Color photos ...

The Starlight Instruments SCT MicroFocuser provides the smoothest control for fine focusing. Two focus knobs allows for standard or 1/10th-speed fo...

Revel in the skies above with this handy stargazing guide, complete with constellation charts and expert tips for observing—and understanding—the w...

Explore planets, stars, and constellations with 100+ fun activities! Space is awesome, and we can explore a lot of it from right here on Earth usin...

Discover the stars and explore constellations -- a kid-friendly guide to navigating the sky. Over thousands of years, stargazers have noticed shape...

Grab your goggles and join the Science Girls! By Aki (Delphine Mach)

Build a miniature version of a space shuttle with the MiniBlock Space Shuttle Magnet Building Set. Featuring 115 pieces, this detailed mini block m...

Askar 91F 91mm f/6.7 Quadruplet Flat-Field Refractor Telescope The Askar 91F is a compact 91mm flat-field refractor designed to make high-quality a...

Precision stainless steel shim set for setting precise backfocus of critical optical systems.  Fits M42 threads.  (M48 and M54 sizes also available...

Precision stainless steel shim set for setting precise backfocus of critical optical systems.  Fits M48 threads.  (M42 and M54 sizes also available...

Profiling nearly 200 types of rocks and minerals from volcanic rocks and granite to sparkling diamonds and explosive sulfur, Pocket Genius: Rocks ...

Overview At just over 4 inches in diameter and a few inches thick (IMX585), the new miniCAM8 is a compact, high-resolution, high-performance, coole...

Compatible with Esprit 100EDX • 44mm image circle Designed specifically for the Sky-Watcher Esprit 100EDX, this flattener corrects optical aberrati...

  ULTRA WIDE 24° FIELD OF VIEW: The expansive 24° true field of view lets you take in entire constellations at once—perfect for learning the sky ...