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The Celestron 2” to 1.25” Adapter with Twist-Lock was designed for visual observers who use both 2” and 1.25” eyepieces regularly and need a quick...

A filter for enchanced H-alpha nebula observations with UV/near IR suppressiong function - especially removing red end spectrum interference. The H...

ZWO adapter: M54 Male to M54 Female, 21mm length 

With the upgrading of electronic astronomical accessories, electronic devices are more and more widely used in astronomical observation and astroph...

Sky-Watcher’s SynScan USB brings older Sky-Watcher mounts into the 21st century, by eliminating the need for outdated serial connections. For thos...

The latest book by noted astronomer David Levy (do-discoverer of the Shoemaker-Levy comet which slammed into Jupiter in 1994. This book, geared tow...

To achieve true dynamic balance with a fork-mounted SCT, both top and bottom weights are required. See stock number CWCPC11-CS for the complete top...

Use this adapter to put a 2" male nosepiece onto the original (non-modular) Starizona Filter Slider to use on anything that accepts a 2" barrel.   ...

All-Weather Protection: Shields your telescope from light rain or snow, dust, and harmful UV rays, providing year-round protection in outdoor en...

The 0.8x reducer can bring Askar 140APO's focal ratio down to F5.6. This is a standard reducer with field flattening capabilities as well. A shor...

The 1.0x flattener does not change the telescope's focal ratio itself. After connecting with the Askar 140APO, it still maintained a focal ratio ...

Galaxy and Nebula booster plus Comet enhancing filter A new generation filter covering multiple objects including comets, galaxies, the Milky Way, ...

The Celestron Aluminum Dew Shield with Cover Cap is an essential accessory that protects your telescope tube in the field. The dew shield reduces r...

This cute little Bahtinov mask plugs into the front opening of the ZWO Seestar S50 and help with manual focusing.  3D printed from durable carbon f...

Celestron's Star Diagonal lets you view objects that are at a 90° angle from the direction the telescope is pointing, thereby allowing comfortable ...

  CNC machined primary mirror mask made of aluminum (EN AW-6061), black matt anodized, suitable for 8" TS-Optics/GSO Newtons The precisely machine...

The Antlia V-Series Luminance filter is available separately for use as a high-quality UV/IR filter.

Cable Length: 0.5 meters USB Connector Type: Type-B(male) to Type A(male)

It includes 4 pieces of desiccant tablets.

A Modern Guide to Planetary Imagingis a new DVD release from renowned planetary observer and astronomer Damian Peach. This DVD provides a wealth of...

Baader H-alpha / O-III / S-II Ultra-Narrowband (Narrowband) filter set - Premium Grade 3.5 / 4 nm half width (to harmonize the exposure time of H...

T2 to T2 adapter Extend distance: 2mm

Specifications Parameters Aperture size 106mm Focal length 509mm Focal ratio f/4.8 Objective lens Quintuplet petzval A...

Made of anodized aluminum.

Our M42-to-M54 Step Ring with Lip adds a stop to keep the ring from threading too far in.  Ideal for using a ZWO CAA with an SCT T-adapter, for exa...

This M42-to-M48 Step Ring features a built-in lip that acts as a mechanical backstop, preventing over-threading into larger M48 connections. Perfec...

This adapter enables you to mount your unmounted 50.8mm filters to 48mm threads. This mount will allow you to use unmounted 50.8mm filters with Sta...

Please Note: A T2 Tilter is included in the package but due to its large size it will be packed separately in another box, not in the camera box.  ...

This adapter converts T-threads (M42) to C-threads (1.0"). It has female T-threads on the bottom and male C-threads on the top. The adapter adds 5....

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...

Askar provides a F3.9 full frame reducer for FRA400 Astrograph, further reducing the focal length and thus shortening the exposure time on its orig...

Introducing the ASI183 camera series, the most sensitivie cameras in ZWO history. Peak Q.E. of the mono sensor reaches 84%! Diagonal 15.86 mm Appr...

For the Celestron 6SE, Feather Touch® Micro Focuser for Celestron 6″ Evolution Schmidt-Cassegrain Telescopes (starlightinstruments.com) you will ne...

The newest Panoptic eyepiece is a 1.25" model with a weight of just 0.5 pounds. It has the same 68-degree apparent field as the other Panoptic eyep...

Made of anodized aluminum.