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
-
Mechanical Crimping Tool | PENTA Pop Tool | 9,000 lbs | W-Die Compatible
Original price was: $307.97.$76.99Current price is: $76.99. -
Used SMC SS5Y3-10F2-08B-C4 Pneumatic Manifold, ø4mm One-Touch, 0.7MPa, D-Sub 25-Pin
Original price was: $100.00.$30.00Current price is: $30.00. -
Briggs & Stratton 795163 Handheld Tiny Tach Diagnostic Tool
Original price was: $276.58.$82.97Current price is: $82.97.



