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 PULS SL30.100 Power Supply, Input: 208-240VAC 50-60Hz 10A, Output: 24VDC 30A
Original price was: $425.00.$106.25Current price is: $106.25. -
70042939 Gate Switching 1-0X5-0-5 | JLG
Original price was: $29.61.$10.36Current price is: $10.36. -
New Turck RK 4.4T 4-RS Actuator And Sensor Cordset Female M12 to Male M12 250V 4A
Original price was: $25.00.$8.75Current price is: $8.75.



