Astronomy Specialist

ASKAR 0.7x FLATTENER AND REDUCER FOR FRA400 & FRA500

$449.00 AUD
SKU: ASA-FRA400-R

Askar

  • M48 x 0.75 Male
  • M68 x 1 Female


 

The field flattener & reducer for the ASKAR FRA 400 & FRA 500 is a dedicated corrector with a reducing power of 0.7X. It shortens the focal length from 400mm to 280mm and the focal ratio from f/5.6 to f/3.9 halving the exposure time. The working distance between the flattener and the sensor is 55mm.

The flattener/reducer can be connected to the focuser of the Askar FRA 400 & FRA 500 using the M68 x 1 male thread, on the camera side there is the universal M48 x 0.75 male thread. The flattener has an internal M48 x 0.75 thread to accept any standard 2" filter. 

 

Spot diagram SharpStar 400 + 0.7x dedicated reducer


 

Reducing power

0.7 X

Focuser connection

M68 x 1 male

Camera connection

M48 x 0.75 male

Working distance

55 mm 

Length

63 mm

Weight

385 gr

Width

63 mm

Outer diameter

76 mm 

SKU

ASA-FRA400-R