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 Automation Direct ZL-CM40 ZIPLink Breakout Board, 40-Pole, 0-132VAC/DC
Original price was: $140.00.$42.00Current price is: $42.00. -
32950GRGT Manual Operators Supertower Ii | Genuine Genie
Original price was: $15.44.$5.40Current price is: $5.40. -
New Lot of 4 WAGO 249-197 Screwless End Stop Terminal Block, 14mm, DIN-35 Rail, Gray
Original price was: $30.00.$10.50Current price is: $10.50.



