1.5-meter telescope of Tartu observatory

Since mid-80s the main instrument has been the longslit spectrograph ASP-32 (also manufactured by LOMO), which has 10 exchangeable diffraction gratings for 300 - 1100 nm wavelenth range.

Camera Andor Newton DU970
– 1600x200 pix, 16 μm/pix
– Cooled thermoelectrically to -90 C

 
The 1.5-meter reflector AZT-12 is the largest optical telescope in Northern Europe. It was manufactured in Leningrad (now Saint Petersburg) by LOMO (Russian: Ленинградское Oптико-Mеханическое Oбъединение, lit. 'Leningrad Optical Mechanical Association') and installed at Tartu Observatory in 1974-1975. The telescope was officially opened for astronomical observations on October 21, 1976. Telescope control system was automated in 2011.

Parameters of the telescope

Main mirror Diameter Radius of curvature Weight 1.5 m -10554.69 mm 850 kg Primary-to-secondary distance 4144.31 mm Secondary mirror Diameter Radius of curvature Conic value e2 0.36 m -2904.57 mm 2.444605   Height of the telescope Length of the tube Diameter of the dome 7.26 m 6.5 m 15 m

Primary focus Focal length Focal ratio Field of view 5.28 m 1/3.51 0.07° Cassegrain focus Focal length Focal ratio Field of view Plate scale 24 m 1/16 0.34° 116 μm/'' Coudé focus Focal length Focal ratio Field of view 52.8 m 1/35.2 0.083°

Guide Diameter of objective Focal length Magnification max min Field of view 0.3 m 4 m x400 x71 0.1°- 0.6° Finder Diameter of objective Focal length Magnification max Field of view 0.1 m 1 m x18 2.5°