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
-
Garmin D2 Mach 1 GPS Aviator Smartwatch
Original price was: $1,299.99.$298.00Current price is: $298.00. -
Used SMC MXF8-20 Low Profile Slide Table Bore: 8mm Stroke: 20mm, 0.15-0.7MPa, M3x0.5
Original price was: $99.95.$34.98Current price is: $34.98. -
P550025DFS-1 Lube Filter Spin-On Full Flow | Genuine Genie
Original price was: $9.86.$3.45Current price is: $3.45.



