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
-
1600456S Controller, Joystick Assembly | JLG
Original price was: $4,973.75.$298.00Current price is: $298.00. -
Used Allen Bradley 193-TAB24 Thermal Overload Relay, 1.6-2.4A, 1NO+1NC Aux, 600V Max
Original price was: $33.00.$11.55Current price is: $11.55. -
Used Keyence CA-DC100 Machine Vision Light Controller, 2x 12VDC Outputs, 24VDC Supply
Original price was: $60.00.$21.00Current price is: $21.00.



