RECENT UPGRADES AND TESTING THE OPTICAL SYSTEM OF THE 35 CM TELESCOPE AT THE STUDENTS ASTRONOMICAL OBSERVATORY „PLANA“

Abstract

The optical system of the 35 cm (350/1600) telescope of the Department of Astronomy,
situated at the Students Astronomical Observatory „Plana“ has been upgraded. The secondary mirror
was replaced to minimize the effects of the vignetting on the images. А new automated focuser was
mounted to fasten and precised focusing of the stellar profiles. The image quality and the
photometry depth obtained with the upgraded system is gauged and presented here.