|
| Date: | 10.3.1996 | Time: | 22:01 UT | Exposure: | 3 x 10 min |
|---|---|---|---|---|---|
| Field of View: | 17o x 17o | Receiver: | 20482 CCD | Filter: | Schott RG 645 |
| Instrument: | f=100mm, 1/2.8 | Observatory: | Hoher List | Observer: | T. Credner, S. Kohle |
Astronomical Institutes of the University of Bonn
On this wide field (17 degrees)
false-color image
the very faint and
extended galactic cirrus is seen. These clouds have large distances
perpendicular to the galactic plane and thus are just visible at high
galactic latitudes. In the very center also the galaxies M 81
and M 82 are seen. The cirrus was detected with the
DWARF (Deep sensing Wide Angle Recording
Facility) , a special instrument for widefield imaging of objects
with low surface brightness.
The Cirrus was first found by Alan Sandage 1975 with the 1.2m-Palomar Schmidt
Telescope on a four hour (!) exposure. The surface brightness is
25 mag/(")2 or even fainter (Sandage, A.: 1976, AJ81, 954).