Ondrejov Perek 2m Telescope
System - coude
Scheme of the telescope:
Remark: splitting plate (see optical scheme) - glass planparallel
plate situated in the tube (inside the hour axis which is also the lighttube)
divides environment in coude room and the dome. Thus the plates protects
Mounting: equatorial (special, author Alfred Jensch, Carl Zeiss)
Primary mirror: diameter 2m (general diameter 2.08m),
thick 30cm, weight 2340kg. Parabolical. Focal ratio 1:4.5
Secondary mirror: Diameter 58cm, convex hyperbolical
Effective focal length: 63.5m
Effective focal ratio: 1:32
The 2-metre telescope in Ondrejov has been in operation since 1967, when it was commissioned on the occasion of the XIII General Assembly of the International Astronomical Union (IAU). The construction of the dome began in April 1963. The construction of the 2m telescope started in January 1966 by Zeiss in Jena, and in October 1966, the telescope was transfered to the Astronomical Institute and consequently disassembled and moved in parts to Ondrejov where it was again reassembled. This final assembly was completed in February 1967 and first light through a eyepiece occurred on 8th March 1967. The telescope was officially inaugurated on 23rd August 1967 during the XIII. International Astronomical Union General Assembly. The first spectrum was acquired on 13th October 1967.
From the beginning, the telescope was primarily used for spectroscopy. Initially the spectra were first exposed on photographic plates and from 1992 electronic detectors were used. From 1992 to 2000 a Reticon detector was used and since 2000 CCD chips.
Our meteostation - Weather
Fisheye - Sky monitoring
Diesel power supply - backup
Autoguide - Automatic guiding the
Coude Spectrograph - short description
of the coude spectrograph
CCD - Technical parameters of our CCD chip
Files - comments on secured files:
zeroes, flat fields, ThAr, stars, darks.
Reduction - Very short manual for data
reduction. FIT headers, IRAF reduction processing, tasks (doslit) etc.
ThAr atlas - overview of ThAr spectra
exposed in Ondrejov.
S2N ratio - some comments on signal to noise
ratio in Ondrejov
Tricks and tips - IRAF manuals and helps
are not very user friendly, so some very basics tips and tricks.
Examples - some examples of spectra
secured in Ondrejov
Data archive - Virtual Observatory
Data archive of the Perek Telescope in the Virtual Observatory.