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
-
2442201610 Variable Speed Unit | Genuine Haulotte
Original price was: $2,629.36.$298.00Current price is: $298.00. -
Used Applied Motion Products STR2 Microstep Motor Drive, 2-Phase, 12-48VDC, 2.2A/PH
Original price was: $75.00.$26.25Current price is: $26.25. -
Weld-End Transition Fitting | IPS | SDR 7 | 335 PSI
Original price was: $50.64.$17.72Current price is: $17.72.



