F3.9 Full Frame Reducer for FRA600

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.

leave a message now >

Product introduction

 

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.

Specifications

Video

Images

FRA600+F3.9 Full Frame Reducer

Sascha Ebeler  | M33 Triangulum Galaxy in HaRGB  | ASKAR FRA600+Askar F3.9 Reducer for FRA600 +ZWO ASI2600MC Pro 

Bang ji young  | Ngc7000  | ASKAR FRA600+Askar F3.9 Reducer for FRA600+ToupTek ATR3 CMOS 26000 KMA 

Download

关键词:

RELATED PRODUCTS

All
  • All
  • Products
  • News

Recommended:PHQ Series、FRA Series、FRA300pro