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
-
Mosmatic WDEI Swivel low pressure- 43.482B – 3/8 ” NPTF x 3/8 ” NPTM
Original price was: $20,247.00.$298.00Current price is: $298.00. -
70045036 Switch, Limit Tabulated | JLG
Original price was: $35.89.$12.56Current price is: $12.56. -
ZB2BA4 Pushbutton Red | Telemecanique
Original price was: $7.43.$2.60Current price is: $2.60.



