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
-
43630ITGT Manual Operators Z60 3Rd Ed | Genuine Genie
Original price was: $12.64.$4.42Current price is: $4.42. -
Used Lot of 3 General Electric CR123 C3.79A Overload Heater Relay Element
Original price was: $30.00.$10.50Current price is: $10.50. -
New THK HSR20-400L(GK) Linear Motion Guide Rail, 400 x 20mm Rail, 60mm Pitch
Original price was: $140.00.$42.00Current price is: $42.00.



