ASKAR FRA400 F/5.6 APO REFRACTOR Nadirus 16" This feedback is provided regardless

This feedback is provided regardless of any zeroing or homing procedure

Circular base plate

The SharpStar 2

It is collimable by using 3 grub screws and the offset can be adjusted by using the central spring loaded screw

5e- at lowest gain (5

ASKAR FRA400 F/5.6 APO REFRACTOR Nadirus 16" This feedback is provided regardlessThe Askar FRA 400 f 5. 6 is a professional apochromatic Petzval quintuplet with an aperture of 72mm and a corrected field of 44mm in diameter. The lenses are assembled in two groups: an air spaced triplet on the front and a correcting doublet towards the focus. The objective lens includes two Extra Low Dispersion glass for a superb chromatic correction. Differently from standard ED refractors, the Askar 400 features a Petzval design that does not