SQA60

A wide-field, high-performance Petzval astrograph, featuring SD glass elements for sharp images.   Description This well-corrected instrument provides a short, 276mm focal length for wide images: about 7.2° with a full-frame camera, around 5° with APS-C imagers (ASI2600 series, Nikon DX, Canon Rebels, Sony A6xxx, etc.), and around 3.5° with 4/3 cameras (ASI294 series, Olympus and Panasonic mirrorless, etc.  With its 6-element design (including two with Slow-dispersion glass), this scope delivers sharp images out to the edges of your field. The design also minimizes vignetting, delivering about 95% of the center's illumination at the far edges!  Specifications Parameters Aperture size 60mm Focal length 276mm  Focal ratio f/4.6 Objective lens Sextuplet petzval APO (includes 2 pieces of SD glass ) Total length 283mm Format specifications Full frame(44mm) OTA weight 2.79kg Gross weight（including tube ring and dovetail plate） 3.54kg Rear-end thread type M48 adapter (with M48×0.75 filter thread) Rear-end connection distance Support 41-66mm range (Recommended connection length is 55mm) Standard package items a SQA60pro OTA, an Oxford cloth case Product Size Diagram Locking Screw Position Diagram Electronic Focuser Assembly Diagram 阿强  |  M81&M82  |  Askar SQA60pro + ZWO ASI2600MC 阿强  |  M81&M82  |  Askar SQA60pro + ZWO ASI2600MC