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
-
70045769 Bracket, Outrigger Limit | JLG
Original price was: $23.48.$8.22Current price is: $8.22. -
Briggs & Stratton 5109999 SWITCH, V1D1S00B-AZC11-000 (ON/OFF)
Original price was: $32.40.$11.34Current price is: $11.34. -
2920211 Lamp Strobe Red 12-80 V | JLG
Original price was: $80.47.$28.16Current price is: $28.16.



