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Our Red Dot Finderscope Bracket is designed for rigidity and long-term durability, with a reinforced base that resists flex under demanding use. Ma...

This part is used to replace the removable lip on the newer model Starizona Nexus 0.75x coma corrector, providing a male M54 x 1 thread for a direc...

Al Nagler eagerly pushed Ethos designer Paul Dellechiaie to extend the new 3.7mm focal length to reach 110°, the same field size as the LEM Simulat...

OIII emits 495.9nm and 500.7nm and it is a blue-green colored filter. Many of images of planetary nebula and supernova remnants are taken only with...

Main Use and Performance Use with H-alpha and OIII-CCD extra narrowband filters (SHO Set) for tricolor CCD astrophotography Narrowband imaging wi...

Optolong IR Pass 685nm filter is designed to block wavelengths below 670nm and can be used in IR-LRGB imaging to produce a sharper luminance image ...

Fits popular telescope mounts sold by Celestron, Meade, Orion, SkyWatcher, TeleVue, Vixen and more. Slotted and counterbored for 1/4 or 6mm socket ...

ZWO’s 16.5 mm M48 spacer is a aluminum extension ring designed to reach optical spacing in imaging systems that require a precise backfocus. It fea...

The perfect telescope for the small home observatory The Airy Disk 140mm Apochromat represents a top-tier telescope designed to meet the needs...

M68 Sensor Tilt Plate M68 sensor tilt plate (5mm) is independently developed by ZWO and specially made to match with the full-frame cooled camera Z...

• Waterproof • Tear-Resistant • Stargazer Map and Guide Every culture has drawn pictures in the stars, creating constellations that represent anima...

The Celestron Labs CB2000C Binocular Compound Microscope offers all the advanced features you’re looking for. With 10x and 20x eyepieces and 4 incl...

Celestron’s proprietary XLT fully multi-coated optics increase light transmission through the optical path to deliver crisp, high contrast images ...

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

The wild mammals of Arizona are often elusive and difficult to locate. They range from deserts to mountain tops. Their tracks, scats, and signs may...

Reptiles and Amphibians of the Sonoran Desert: A guide to 41 of the most commonly encountered reptiles and amphibians native to the Sonoran Desert ...

11" diffraction limited Schmidt-Cassegrain telescope Celestron's premium StarBright XLT coatings Fully computerized dual fork arm Altazimuth mount...

ASI294MC ASI294 is the first camera in the world that equiped with SONY latest sensor IMX294CJK. Diagonal 21.63 mm (Type 4/3) Approx. 10.71M-Eff...

This adapter can be used as a 1.25" nosepiece for any camera that has C-mount (1") threads. The adapter has male C-threads on the camera side, and ...

Description The secondary mirror cover can be used to cover the rear side of the secondary mirror. This considerably reduces the cooling of the se...

100% Safe for Eclipse Viewing Lightweight and generally does not require rebalancing tube assembly. Stronger than any other solar filter film on t...

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...

Fisher Space Pen’s Sealed Pressurized Ink Cartridge performs in temperatures from -30º F to +250º F, underwater, in zero gravity, at any angle - ev...