The Askar 3 inch F3.9 full frame reducer features 4 elements optical design specifically for the FRA600, offers a 0.7X reduction in focal ratio, when used with the FRA600 astrograph, this reducer effectively shortens the exposure time, its focal length is reduced to 420MM, dramatically increases your field of view and bringing more convenience and possibilities for your visual use or astrophotography. The backfocus is the standard 55MM. It also has a built-in M48X0.75 (2 inch) filter thread that allows you to screw on filters conveniently.
Recently viewed products
-
Briggs & Stratton 84009651 IS4500Z BELT, CAT – NET
Original price was: $53.66.$18.78Current price is: $18.78. -
89871-2548GT Hose Assembly 3/4 ” Str Fem Str Fem | Genuine Genie
Original price was: $78.78.$27.57Current price is: $27.57. -
70004094 Endbell, Generator Brush Block | JLG
Original price was: $632.72.$158.18Current price is: $158.18.



