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
-
Used Lot of 4 SMC KM16-04-04-3 Pneumatic Manifold 4mm P2C, 3-Port, -100kPa to 1.0MPa
Original price was: $50.00.$17.50Current price is: $17.50. -
New Norgren V12R317AB214B Pneumatic Valve 2 Pos 3 Way Air Actuated Spring Return
Original price was: $40.00.$14.00Current price is: $14.00. -
Used Schrader Bellows 52071-1000 Manual Foot Switch, 2-Pos 4-Port, 1/4in NPT, 150psi
Original price was: $140.00.$42.00Current price is: $42.00.



