In Stock

Used HyperStar 9.25 v3.  Excellent condition.  Includes adapter for 17.5mm backfocus M42 camera (ZWO, etc.)

Used HyperStar C11 v3.  Excellent condition.  Includes adapter for 17.5mm backfocus M42 camera (ZWO, etc).  Can be used on EdgeHD scope with option...

Used HyperStar C8 v4 with Filter Slider.  Excellent condition.  Includes adapter for ZWO 17.5mm backfocus M42 camera.

Used Baader Morpheus 4.5mm eyepiece.  Like new.  Includes original box, caps, eyeguard and soft case.

Used ZWO ASI183MM Pro monochrome camera.  Excellent condition.  Includes all original cables, adapters, case and box.

Used ZWO EFW 5x2" filter wheel.  First generation model.  Excellent condition. Includes original adapters, screws, USB cable and box.

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

Introducing the ASI676MC/MM , the all-sky camera featuring a unique square 1/1.6-inch image sensor and a super high resolution of 12MP! It is perfe...

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

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, ...

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...

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><...