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
-
376412K1 Boom, Right Self Loading | JLG
Original price was: $504.78.$126.19Current price is: $126.19. -
Used IDEC ALW212620D-A Amber Illuminated Pushbutton, 22mm, 2NO, 24V LED, 600V Max
Original price was: $40.00.$14.00Current price is: $14.00. -
10717742 Seat Assembly, With Rails And | JLG
Original price was: $449.27.$112.32Current price is: $112.32.



