Open Box ES Field Flattener For f/5 to f/7 Refractors GoTo OD3 @ 200-1000nm

OD3 @ 200-1000nm

HCG (high conversion gain) mode

18") Focal Ratio: f/2

This is the scope only

3" R & P Focuser

Open Box ES Field Flattener For f/5 to f/7 Refractors GoTo OD3 @ 200-1000nmPRICE DROP! Was $130, now just $100! Condition: This is an open box return in excellent condition. The outer body is unmarked and the optics are clean. Though, this is missing and does not include the M48 adapter. Otherwise it is practically new and includes the original box. Description: This is a field flattener for refractor type telescopes with a focal ratio of f 5 to f 7 Causes no change to the telescope focal length 2 inch barrel to easily