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
-
1001279290 Adapter-Mech, 90 S Orfs/Orb 4-4 | JLG
Original price was: $38.86.$13.60Current price is: $13.60. -
114136 Overlay, O/R Pcon Gs3232 | Genie
Original price was: $39.84.$13.94Current price is: $13.94. -
2940175 Latch, T-Handle (Lock) | JLG
Original price was: $74.90.$26.21Current price is: $26.21.



