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
-
New Lot of 9 Littelfuse BLF-20 Fast Acting Midget Fuses, 20A, 125VAC, Class 5AG
Original price was: $39.00.$13.65Current price is: $13.65. -
31218674 Manual, Operator Ae1932 Ja PVC 2104 | JLG
Original price was: $38.00.$13.30Current price is: $13.30. -
Used Omega FMA5543-24VDC Mass Flow Controller With Control Valve 0-200l/min, 24VDC
Original price was: $980.00.$245.00Current price is: $245.00.



