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 Sunx FM-214-4-P Digital Flow Sensor, 10L/MIN, PNP, 4mm Port Fitting, 12-24VDC
Original price was: $185.00.$55.50Current price is: $55.50. -
Used Scienscope SSZ Model Stereo Zoom Binocular Microscope Head, With Focus Adjuster
Original price was: $400.00.$100.00Current price is: $100.00. -
Used Telemecanique SM956A-402-000 Ultrasonic Proximity Sensor, 200kHz, Range 0.12-2m
Original price was: $650.00.$162.50Current price is: $162.50.



