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
-
P502009DFS Lube Filter Spin-On Full Flow | Genuine Genie
Original price was: $19.49.$6.82Current price is: $6.82. -
New Other SMC CDRQ2BS15-360 Compact Rotary Actuator 360 Degree, 6mm Shaft, 0.15-0.7MPa
Original price was: $175.00.$52.50Current price is: $52.50. -
Used Anaheim Automation DC2170 Bidirectional RS-422 to RS-232 Converter, DB9, 9VDC
Original price was: $33.00.$11.55Current price is: $11.55.



