In Stock

This double ring set offers improved stability over single camera body mounting rings for using a ZWO camera with a DSLR camera lens.  The ring set...

This double ring set offers improved stability over single camera body mounting rings for using a ZWO camera with a DSLR camera lens.  The ring set...

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

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 ...

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 ...

M42 Sensor tilt adapter Product: M42 sensor tilt adapter Thickness: 5mm Suitable for APS-C cameras (ASI2600) You can connect it to M68 OAG and 2”E...

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...

What do you see when you look up into the sky at night? The moon, stars, maybe even a comet or asteroid? You can also see other planets! In Planet...

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'...

Developed for the Stellarvue FSV-3B series focusers, this is the 3rd generation of Optec's DirectSync motor. The SVX30 ThirdLynx control circuit fe...

Designed for iOptron® GOTO mounts for an additional 8 inches of extra height. Fits the following iOptron® tripods/piers: LiteRoc Tripod for AZ Mo...

Made from anodized aluminum.

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...

Helps to obtain the correct backfocus for your viewing needs. Made for use with 2-inch (50.8mm) telescope eyepieces with M48 mounted filter threads...

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

This travel-sized digital survival kit contains all that you need to clean lenses, filters, and cameras while on the go! The travel-sized kit inclu...

The Twilight I is a light-to-medium-duty alt-azimuth mount and tripod designed to quickly and easily accept small to medium sized refractors, such ...

Supplemental 5lb/2.25kg Counterweight for EXOS Mounts. Includes locking knob.

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

This finder scope bracket will support almost any finder scope that has an outside diameter between 40-55mm. It is manufactured from machined alumi...

This guide scope features a 30mm aperture and an f/4 focal ratio with a helical focuser. Lightweight and durable due to the aluminum construction, ...

The OAG-L-68 maintains the same 12*12 prism as the OAG-L; however, it is designed exclusively for the ZWO ASI461MM Pro camera and ZWO 50mm square f...

The SII/OIII filter that brings Hubble Palette imaging to your color camera. The L-Synergy is Optolong's newest narrowband filter, introduced in 20...

This is a replacement mounting plate for the ZWO TC40 Tripod and the PE200 Pier Extension. Ideal for users with multiple mounts or those looking fo...