Products

The Antlia ALP-T Dualband 3nm Ha&OIII Filter is a dual narrowband filter, which lets the red H-alpha (656.3nm) and the blue-green OIII (...

This 2" mounted APT-T dual band 5nm filter is optimized to work with imaging systems slower than f/4. For faster optics from f/2.2 to f/3.6, the h...

ALP-T Dual Band 5nm Highspeed Filters # ALP-T-2-HS are further optimized to work with high-speed imaging systems by shifting slightly the passba...

AntliaThe Antlia LRGB-V Pro series filters are designed for monochrome cameras that use both CCD and CMOS sensors. Suitable sensors include KAF/KAI...

The Antlia Quad Band Anti-Light Pollution Filter is a light suppression filter for color and monochrome cameras. It is able to shoot most deep sky...

  Antlia H-a, SII and OIII 2.5nm Ultra Filter - Extra Narrowband filters   2" mounted The Antlia SHO 2.5nm Ultra series filters are made with quart...

Antlia 3nm SII 671.6 - 2" Mounted Antlia 3nm Ha 656.3nm - 2" Mounted  Antlia 3nm OIII 500.7nm - 2" Mounted Application and Performance: High...

The Antlia. Triband RGB Ultra Filter is designed for light pollution suppression for OSC and Mono cameras. The spectral design selected the most su...

The Antlia LRGB-V Pro series filters are designed for monochrome cameras that use both CCD and CMOS sensors. Suitable sensors include KAF/KAI senso...

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

The Antlia V-Series Luminance filter is available separately for use as a high-quality UV/IR filter. Highlight of LRGB-V Pro series set 1. Premium...

The SkyWatcher Esprit 120 and 150 require the Starizona ApexED 0.65x reducer to be placed farther back from the optical tube and when used with our...

The ApexEd Threaded Focuser Adapter works on a verity of focuser options. You can pick between M42 or M48 male camera facing threads. Each Threaded...

APM Riccardi Universal APO Flattener 1.0x- Model 2 for APO Telescopes Our new, universal flattener for APO’s was calculated with the famous optical...

The Pocket Naturalist series introduces novices to common plants and animals and natural phenomena. Each pocket-sized folding guide highlights up t...

The Arizona Recreation Map is a folded map version of the Recreation Guide pages within our Arizona Road & Recreation Atlas. One side provides ...

12th edition, 2021. ISBN: 9781734315042 The Grand Canyon State abounds in natural beauty and outdoor recreation possibilities. Completely reworked ...

Get this must-have guide for Arizona, featuring full-color photographs and information to help you identify rocks and minerals. Identify and colle...

Whether you’re in the field filling out a tag for that once-in-a-lifetime trophy or marking off your checklist of the never-ending chores that need...

The Askar 103 APO comes with three optional premium accessories, a 1.0x flattener, a 0.8x reducer, and a 0.6x reducer. Introduced here is the 0.6x ...

Pre-order for Askar 0.75x Reducer for 71F Telescope. More information coming soon!

Askar’s new-launched 3” 0.7x full-frame reducer adapts for 107PHQ & 130PHQ. It has a triplet design with one ED glass. The 0.7x reduction gives...

The Askar 3 inch F3.9 full frame reducer features 4 elements optical design specifically for the FRA600, offers a 0.7X reduction in focal ratio, wh...

The Askar 103 APO comes with three optional premium accessories, a 1.0x flattener, a 0.8x reducer, and a 0.6x reducer. Introduced here is the 0.8x ...

Askar 103APO: An Ultra-Versatile Refractor for Imaging & Visual The Askar 103APO is a versatile triplet refracting telescope that's attractive...

As the first long-focal-ratio Flatfield astrograph from Askar, 107PHQ is born with a special mission: whether you are just getting started in astr...

Askar APO series is dedicated to enabling more users to own a high-performance astrograph. And now we launched the 120APO which has a bigger apertu...

The 0.8x reducer can bring Askar 120APO's focal ratio down to F5.6. This is a standard reducer with field flattening capabilities as well. A shor...

The 1x flattener does not change the telescope's focal ratio itself. After connecting with the Askar 120APO, it still maintained a focal ratio of 7...

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 ...

 The Askar 140APO is an OTA with a 140mm aperture, 980mm focal length, and f/7 native focal ratio.   The aperture of 140mm gives it an inherent adv...

151PHQ is a long-focal-ratio, flatfield astrograph newly launched after 130PHQ and also the biggest refractor of Sharpstar products till now. Inst...

The 0.8x reducer can bring Askar 185APO'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 185APO, it still maintained a focal ratio of...