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
-
New Woods Fx33/8 Sure Grip Bushing Bore: 3-3/8 ” Torque Capacity: 30000lb/in
Original price was: $200.00.$60.00Current price is: $60.00. -
3640702 Rail, .04 X 7.71 X 76.16 A366 | JLG
Original price was: $275.05.$82.52Current price is: $82.52. -
X002251 Ds, Servisignl, Case Of 10 | JLG
Original price was: $238.42.$71.53Current price is: $71.53.



