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
-
TP8032867 Steering Knuckle Assembly | Pettibone
Original price was: $1,709.77.$298.00Current price is: $298.00. -
New Hoffman CSD20206 Concept Single Door Wall Mount Enclosure 20 “H x 20 “W x 6 “D Gray
Original price was: $505.00.$126.25Current price is: $126.25. -
Used Weidmuller 8790520000 MCZ R 24VDC Relay Module 6A
Original price was: $33.00.$11.55Current price is: $11.55.



