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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17
Sturdy and Reliable Construction
you still must pay attention to the unavoidable tolerance between the installation of the collimator and internal diameter of a focuser
CNC quality
This big GSO Dobsonian reflector features a 8" (203mm) diameter parabolic primary mirror with 94%-96% reflectivity
GSO Coma Free 8" F6 Dobsonian for photography Sturdy and Reliable ConstructionBasic Manual for Focuser Adjustment & Optical Alignment Coma Free Optics This big GSO Dobsonian reflector features a 8" (203mm) diameter parabolic primary mirror with 94% 96% reflectivity. Coma is an inherent property of telescopes using parabolic mirrors. This results in an image that is not in the center of the field looking wedge shaped. This causes stars to appear to have a cometary coma in traditional Dobsonian reflector. Built in GSO Coma
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