Products

Explore and "color in" the amazing world of minerals and crystals... readers and rockhounds of all ages and skill levels will love this book! Learn...

Explore and "color in" the amazing world of minerals and crystals... readers and rockhounds of all ages and skill levels will love this book! Learn...

Allows Celestron computerized telescopes (CPC, CGE, NexStar, Advanced Series) to be connected to a RS-232 serial port for computer control. A USB-t...

Counterweights Not Required Only 3.4kg weight ±2.5arcsec PE Capacity 13.5kg (max 18kg) Strain Wave Gear (Harmonic Drive) ...

Use this adapter to attach accessories with standard SCT female threads (such as a focal reducer) to a 2" focuser or visual back. This adapter has ...

35.3mm T-to-T spacer (M42 female to M42 male).  This adapter takes up 35.3mm of the Starizona SCT Corrector's 90.3mm back focus. Leaving 55mm of ba...

This adapter gives your Starizona SCT Corrector v1 SCT Threads.   Thread Type: SCT Length: 9mm length

Updated, more robust design! This bracket will fit the existing finderscope mounting holes on SCT telescopes.  It fits common finderscope style fee...

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...

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...

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...

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...

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...

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...

CNC machined secondary spider made of aluminum (EN AW-6061), black matt anodized, suitable for 8" TS-Optics GSO Photon This secondary spider is ma...

CNC machined secondary spider made of aluminum (EN AW-6061), black matte anodized, suitable for 10" TS-Optics GSO Photon This secondary spider is m...

CNC machined secondary spider made of aluminum (EN AW-6061), black matte anodized, suitable for Skywatcher 150 P/PDS/Quattro This secondary spider ...

CNC machined secondary spider made of aluminum (EN AW-6061), black matte anodized, suitable for Skywatcher 200 PDS/Quattro This secondary spider is...

CNC machined secondary spider made of aluminum (EN AW-6061), black matte anodized, suitable for Skywatcher 250 PDS/Quattro This secondary spider is...

CNC machined secondary spider made of aluminum (EN AW-6061), black matt anodized, suitable for TS-Optics GSO Photon 6" This secondary spider is ma...

AstroLevel, the ultimate accessory for your ZWO SeeStar S50 smart telescope. Designed to seamlessly connect to your SeeStar's tripod, AstroLeve...

Limited Quantity: Due to high demand and limited availability, orders will be fulfilled on a first-in, first-out basis. This means that the earlier...

The 0.84x reducer can bring Sharpstar 50EDPH's focal ratio down to F4.6. This is a standard reducer with field flattening capabilities as well. A...

V2 model with new tube ring and foot design.  This compact 50mm f/5.5 APO refractor telescope has triplet air-spaced APO optics, including two piec...