Products

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...

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 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...

Please be advised that Seestar S30 is a pre-sale item. Order Fulfillment: Preorders will begin shipping in late December. Limited Quantity: Due t...

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...

Finally, an affordable meter for measuring sky brightness for astronomers!  The "Sky Quality Meter" measures the brightness of the night sky in mag...

  Large 300mm aperture delivers stunning viewing experience Innovative collapsible design that retains collimation 1840x more light-gathering powe...

34mm fully illuminated field but can handle full frame as well 95mm back-focus (55mm when back focus spacer and M48 ring installed) Drops f/ratio...

36mm fully illuminated field, compatible with both APS-C and full frame sensors 90mm back-focus (55mm when back focus spacer and M48 ring install...

0.9x thread-on reducer/corrector produces a flat field across the entire image while shortening exposure time by 24%. Optimized for Evolux 62mm re...

0.9x thread-on reducer/corrector produces a flat field across the entire image while shortening exposure time by 24%. Optimized for Evolux 82mm re...