Archives of Photographic PLates for Astronomical USE

Archive - Tautenburg Observatory

Schmidt plates

9213 plates of size 24×24 cm taken with the Tautenburg Schmidt telescope (focal length 4 m, free aperture 133 cm, field of view 3.3×3.3 square degrees)

The entire plate catalogue is available via public FTP (schmicat.sdf); there is a coordinate search in the entire plate catalogue

4228 plates had been digitized with a self-built scanner at 10 micron (2540 dpi) resolution with 16 or 8 bit depth; FITS are stored on CD-ROM; FITS are not available online, but can be provided on request; the entire list of scanned Schmidt plates is available via public FTP (scanned.sdf); scanning was stopped in 2007 for technical reasons

There are numerous scientific publications from projects with digitized Schmidt plates related to topics: quasars, variable stars, galaxies and stellar clusters

Spectral plates

5453 spectral plates taken with the following instruments:

The Cassegrain-Spectrograph with dispersions from 10 to 75 Angstroms/mm. This instrument was in use from 1966 to 1971 and was then removed from the telescope because of instability problems caused by flexure. The Coude-Spectrograph with dispersions from 2 to 24 Angstroms/mm. This instrument was used in photographic mode from 1968 to 1994. The UAGS with dispersions of 137 and 274 Angstroms/mm in normal mode or from 200 to 600 Angstroms/mm in connection with image tubes.

The entire plate catalogue is available via public FTP (speccat.sdf).

Online-search for objects on spectral plates; the search results provide plate metadata with the following entries: - PLNR Plate number - xx in addition to the plate number (e.g. a,b,I,II) - A Availibility (y = at Tautenburg, l = loaned) - Object Observed object - YEAR Year, - MM Month, - DD Day of the - Begin begin of the exposure (ET) - End end of the exposure (ET) - Disp Dispersion in Angstrom/mm - Z Zeeman analizer (y = was used, n = without) - FCam Focal length of the camera used - Comm1 Spectrograph used (Cass, Coude, UAGS, also in connection with IT = image tube) - O n = object not visible on the plate by eye - E n = object under- or overexposed - I n = bad or missing intensity calibration - W n = bad or missing wavelength calibration - B y = plate is broken

Spectral plates are not digitized.

Based on: Plate Archive and Plate Scanner