Observatories Slovensky

Stara Lesna Observatory

IMAGE: Stara Lesna Observatory There are three observing pavilions close to the headquarters of the Astronomical Institute on the Stará Lesná meadows: two buildings with 5m domes (G1 and G2) and a special pavilion of the horizontal solar spectrograph.

G1 and G2 pavilions shelter 60cm Cassegrain telescopes with the focal ratio of f/12.5 made by the Carl Zeiss company in Jena. The telescopes serve for stellar photometry and spectroscopy. Light from the focus of the telescope at G1 is fed to a medium dispersion échelle spectrograph in the basement of the building. The resulting spectra are used to study atmospheres of stars, to measure their radial and rotational velocity but also enable to detect exoplanets. The second 60cm telescope (G2) is equipped with a sensitive CCD camera and a set of wide-band and special interference filters to precisely measure brightness of stars.

Observations of solar atmosphere are made using 50cm horizontal telescope equipped with a high-resolution spectrograph (f=35 m) made by the Carl Zeiss company in Jena. The instrument is mainly used for student training and tests of post-focus instruments and optics nowadays.

The following figures illustrate the Stará Lesná observatory and its instruments.

IMAGE: Fiber injection and guiding unit (FIGU)
Fiber injection and guiding unit (FIGU) in the primary focus of the 60cm telescope of the G1 pavilion.
IMAGE: Calibration unit
Calibration unit (ThAr hollow cathode lamp and continuum light sources) in the warmroom of G1.
IMAGE: Échelle spectrograph
Échelle spectrograph in the basement of the G1 pavilion. The light is fiber-fed from FIGU. Spectra are recorded with a sensitive CCD camera.

Geographical coordinates: longitude 20° 17' 28" E, latitude 49° 09' 10" N, 810 m above sea level

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Date and Time: 7.12. 2021 16:17:13 CET
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