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The Askar 0.74× reducer, specially optimized for the Askar 111F, is designed to unlock a broader and more efficient deep-sky astrophotography exper...

Lightweight & Compact - Designed for Both Visual Observation and Astrophotography *Focus can be achieved within a back focus range of 45-75 m...

ANORAMIC VIEWS. PINPOINT PRECISION. Ultra-Wide Field of View Experience an expansive, immersive view of the night sky with an ultra‑wide field of v...

ANORAMIC VIEWS. PINPOINT PRECISION. Ultra-Wide Field of View Experience an expansive, immersive view of the night sky with an ultra‑wide field of v...

PANORAMIC VIEWS. PINPOINT PRECISION. Ultra-Wide Field of View Experience an expansive, immersive view of the night sky with an ultra‑wide field of ...

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...

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, ...

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

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...

Fits popular telescope mounts sold by Celestron, Meade, Orion, Sky-Watcher, Tele Vue, Vixen and more. Slotted and counterbored for 1/4 or 6mm socke...

<img src="https://cdn.shopify.com/s/files/1/0327/2569/6648/files/comparison.jpg?v=1624746966" alt="Optolong Filter Comparision"><br><...

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...