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Our extremely popular Filter Slider is now available for the Celestron Origin!  The Filter Slider allows easy swapping of standard 2" filters.  The...

Pre-Order Now! Press release from Tele Vue: ConceptThe Nagler Type 7 series was developed as a natural extension of our highly regarded, 85°,limite...

The 7-element, Nagler Type 6 design is based on the original patented Nagler design. This new 7-element design update for the short focal length Na...

ED objective lenses provide superior images virtually free of chromatic aberration with accurate color reproduction, increased resolution and con...

The Starizona SCT Corrector requires the proper camera adapter to achieve the correct lens-to-CCD distance. This ensures the best optical performan...

Honders Advanced Catadioptric optical design Radiant Aluminum Quartz (RAQ)™ mirror coatings Wide-open 250mm focal length FAST f/2 focal ratio 5-in...

• Waterproof • Tear-Resistant • Stargazer Map and Guide The name Solar System is derived from "Sol" or sun, and describes our planetary system orbi...

In astrography, Nikon, Canon, Sony mirrorless cameras have been used more and more frequently by astronomy amateurs in recent years. Therefore, on ...

Powerful 20x optical system for an image that is close-up to the action Large 50mm objective lenses with tremendous light gathering capability Hig...

Bats are one of the most unique and mysterious animals on earth. You may have feared them or have been fascinated by them. Either way, you have wan...

3 element - 0.75x-Flat Field for sharper stars all to way to the edge.  Specifically made for the 106mm APO. Screws on to the M63x1-Thread. 0.75x f...

A compact 96mm apochromat for powerful images A compact apochromat for powerful images This APO with a 96mm aperture offers This APO with a 9...

This version of the C14 MicroFocuser will fit both the Edge HD and new-style non-HD 14" SCTs from Celestron. The "new-style" non-HD C14s have the s...

For over 50 years, Fisher Space Pen has been proud to have our technology approved and used on every crewed flight into space since 1967 with NASA....

To achieve true dynamic balance with a fork-mounted SCT, both top and bottom weights are required. See stock number CWCPC8-CS for the complete top ...

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...

This is a replacement for the secondary mirror mounting plate that is included with the HyperStar 6.

This is the top half of the Celestron CPC-925 counterweight set. Use this if you already have a bottom slidebar kit from Celestron or Losmandy. Inc...

Optolong UHC nebula clip filter for Canon EOS APS-C cameras! The UHC (Ultra High Contrast) broadband filter is designed to improve the visibility ...

All Starizona motors come with the correct gears and tools to attach them. This product is only intended to be used as a replacement.

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...

The UHC (Ultra High Contrast) broadband filter is designed to improve the visibility of various deepsky objects. The UHC (Ultra High Contrast) bro...

This is the top half of the Celestron 11" SCT counterweight set. Use this if you already have a bottom slidebar kit from Celestron or Losmandy. Inc...

Best-selling star chart, ideal for beginning astronomers!These charts are the perfect way to learn the stars and constellations. Simply rotate the ...

Authors: Bruce GrubbsPaperback: 368 pages, 3rd Ed.Lace up your boots and sample 120 of the finest trails in Arizona. Hike the Boucher-Hermit Trails...

When closed, the Bullet Space Pen is the perfect size to carry in your wallet, pocket, purse, car glove box, organizer, or toolbox. When opened it'...

The Antlia 3nm Pro SHO Narrowband Filter Set combines three 2" mounted filters—Sulfur II, H-alpha, and Oxygen III—for high-contras...

  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 ...

Easily use standard 1.25" eyepieces and accessories in a 2" telescope focuser, diagonal, or visual back with this precision-machined aluminum adapt...

Meticulous Mid-Range Machinery. Powerful. Compact. Precise. Dual-axis belt drives deliver whisper-quiet, extremely accurate movement for both axes ...

Designed with the discerning astrophotographer in mind, Sky-Watcher’s top-of-the-line Esprit EDX refractors deliver the kind of imaging performanc...

Designed with the discerning astrophotographer in mind, Sky-Watcher’s top-of-the-line Esprit EDX refractors deliver the kind of imaging performanc...

All-metal binocular tripod adapter designed for secure mounting of binoculars to standard photo and telescope tripods. Features 1/4"-20 threading o...

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...