International Center for Astronomical, Medical and Ecological Research
 TUVES - Terskol UV Echelle Spectrometer
 TUVES allows to extend the wavelength range available for MAESTRO down to 3000 Å. Altitude of peak Terskol (3100 m) is appropriate for obtaining spectra in the near UV range.
  • collimator is a spherical mirror with diameter of 110 mm and focal length 4000 mm;
  • echelle grating with 75 gr mm-1 and 63.° 5 blaze angle;
  • echelle grating with 75 gr mm-1 and 75.° blaze angle;
  • mosaic R6: built from two 220x320 mm echelle gratings
    with 37.5 gr mm-1 and 80.° 5 blaze angle;
  • cross-disperser is 4° grating with 300 gr mm-1
  • cross-disperser is 7.°7 grating with 600 gr mm-1
  • camera folded Schmidt ƒ = 196 mm;
    Schmidt corrector and flat field lens were made of quartz.
  • detectors:
  • Wright Instruments CCD, 1242x1152 with 22.5 mk pixel.

Observational Capabilities

Grating 63.° 5 75° 80°
Max. Resolution 18000 32000 50000


Raw image R ~32000

Spectrum with R ~50000

Telescopes & Equipment
 2m RCC Telescope produced by Carl Zeiss Jena GmbH (Germany)
 Large Horizontal Solar Telescope  
 Zeiss-600 Telescope
 MAtrix Echelle SpecTROgraph
 Multi Mode Cassegrain
 Terskol Ultra Violet Echelle Spectrometer
Some of the observatory activities
 Spectral investigations of interstellar clouds, solar analogs, X-ray binary stars, etc.
 Orbit calculation and monitoring of geosynchronous satellites
 Simultaneous observations with the Synchronous Network of Optical Telescopes to study microvariability of stars
  Study of gas and dust in comets
 Atmospheric studies