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
-
X002251 Ds, Servisignl, Case Of 10 | JLG
Original price was: $238.42.$71.53Current price is: $71.53. -
Used SICK i10-E0233 Solenoid Door Interlock Safety Switch 3NC-1NO w/ Key Actuator
Original price was: $200.00.$60.00Current price is: $60.00. -
950213 Indicator, Flow | JLG
Original price was: $93.37.$32.68Current price is: $32.68.



