ASKAR FRA400C F/5.6 APO REFRACTOR SKYROVER-IP otherwise the focuser drawtube may

otherwise the focuser drawtube may not travel all the way in

Constructed from high-grade steel

Type 1: for crown and the worm gear

With this controller you can keep the temperature in the tube or around the optics only a few degrees above the air temperature

ASKAR FRA400C F/5.6 APO REFRACTOR SKYROVER-IP otherwise the focuser drawtube mayThe Askar FRA 400C 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 400C features a Petzval design that does not