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
-
4219374 Module, Glo Plug Timer Crtl | Deutz
Original price was: $357.21.$89.30Current price is: $89.30. -
Open box ELO ET1723L-8UWA-1-BL-MT-ZB-H 17 ” Touchscreen Monitor 5:4 1280×1024 75Hz VGA DVI
Original price was: $725.00.$181.25Current price is: $181.25. -
Black Push-In Tube Union Fitting 5/8 “OD (Set of 5)
Original price was: $99.90.$34.96Current price is: $34.96.



