Astronomical Reflecting Telescope 11 (AZT-11)


1.25-meter Ritchey-Chretien reflector with a focal length of 16 m has two focuses and intended for photometric and polarimetric observations. 5-channel photopolarimeter developed by V. Piirola is mounted at the main focus, CCD-photometer - at the auxiliary focus. The telescope is used for photometric and polarimetric observations of various space objects: variable stars of different types, active galactic nuclei, asteroids, comets.

Primary mirror diameter1.25 m
Focal length16 m
Optical systemRitchey-Chretien (f/12.8)
Equipment Photopolarimeter by V. Piirola
CCD with a focus reductor
Coordinates44°43′37″ N; 34°01′02″ E


CCD-camera ProLine PL230


Sensore2v CCD230-42
Focusing deviceDigital Atlas Focuser
Filter wheelCFW-2-7 with UBVRI filters
Frame size2048×2048 pixels, 10′.9×10′.9
Pixel size15 μm, 0″.32/pixel
Well Depth125194.0 e-

A focus reductor for the CCD photometer developed by Valeriy Yuzefovich Terebizh and manufactured at the optical workshop of CrAO was mounted in September 2014.