Celestron 8" Rowe-Ackermann Schmidt Astrograph Optical Tube Assembly - 91073 Roof Prism Binoculars while keeping weight to a

while keeping weight to a minimum

Note: the actual external dimensions (except for the center hole) may vary slightly from the given specs

close up and personal

Then those components can be assembled and ready to use in seconds

Celestron 8" Rowe-Ackermann Schmidt Astrograph Optical Tube Assembly - 91073 Roof Prism Binoculars while keeping weight to aCelestron 8" Rowe Ackermann Schmidt Astrograph Optical Tube Assembly Flat image field free of optical aberrations like field curvature, coma, astigmatism, and chromatic aberration across an entire APS C sensor NEW Ultra Stable Focus System six precision sealed ball bearings virtually eliminate image shift Integrated air cooling system 12V DC MagLev fan reduces cooldown time and provides optimal air flow while filtering out dust Internal filter mount