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
-
Used Omega FMA5543-24VDC Mass Flow Controller With Control Valve 0-200l/min, 24VDC
Original price was: $980.00.$245.00Current price is: $245.00. -
Used SMC NARM3000-A-N03 Manifold Regulator Block, 0.05-0.85MPa, 3/8in NPT Port
Original price was: $40.00.$14.00Current price is: $14.00. -
Used Watec WAT-902 Monochrome Camera 1/2 ” CCD Pixels: 510×492, 1Vp-p 75 Ohm
Original price was: $79.00.$27.65Current price is: $27.65.



