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
-
063667-005 Block, Contact | Upright
Original price was: $2.43.$0.85Current price is: $0.85. -
Used Cognex VPM-5218-32 Frame Grabber Card ISA 2x 12-Pin Hirose Cameras DB9 Monitor
Original price was: $950.00.$237.50Current price is: $237.50. -
New Lot of 19 Weidmuller 0146720000 Terminal Block End Plate 36.5mm x 65mm x 3mm
Original price was: $50.00.$17.50Current price is: $17.50.



