10" f/4 Imaging Newtonian OTA

Description iOptron’s 250mm (approx. 9.8") f/4 Newtonian optical tube assembly (OTA) with a fast F/4 focal ratio is perfect for imaging deep-sky objects with a DSLR or dedicated astronomy camera. The 3.25" Crayford-style focuser, dual split-hinged mounting rings, an 8x50 straight-through finder, and an 13" Vixen style dovetail plate make it ready to attach to your mount and start using. Features Dual speed 3.25" Crayford-style focuser with 1.25" adapter iEAF ready BK7 optical glass primary mirror with a protective quartz layer 8 x50mm finder scope 13" Vixen style dovetail plate with solid full circumference mounting rings Front dust cap Optional iOptron iEAF Focuser (#8453) Package includes#6313 10" Fast Newt OTA 10" Optical tube assembly 8x50 mm straight-through finder with bracket Tube mounting rings 13" Vixen-style dovetail rail 2" 35mm extension tube Front dust cover Specifications   Optical Design Newtonian Clear Aperture 250mm Focal Length 1000mm Focal Ratio f/4 F