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
-
28433GT Manual Operator Instruct’92 S.S. | Genuine Genie
Original price was: $12.68.$4.44Current price is: $4.44. -
Watts OFTWH OneFlow Anti-Scale System
Original price was: $798.50.$199.62Current price is: $199.62. -
31217874 Manual, Operator Ert2669 Spn PVC 2004 | JLG
Original price was: $38.00.$13.30Current price is: $13.30.



