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 Festo LRP-1/4-4 Precision Pressure Regulator, 0.1MPa-1.2MPa, 2000l/min, G1/4in
Original price was: $100.00.$30.00Current price is: $30.00. -
Used Allen Bradley 1489-A1C250 Circuit Breaker, 1-Pole, C-Curve, 25A 277VAC 48VDC
Original price was: $28.00.$9.80Current price is: $9.80. -
084295Y1 Hinge, Control Valve Conver | JLG
Original price was: $20.79.$7.28Current price is: $7.28.



