Scientific research Popular-scientific pages Credits
Multi-
waveband
astronomy
Galaxy
halos/
ISM
Example: N4666 Halos picture gallery Emission processes Astronomical observatories Telescopes
and instr-
umentation
Observing techniques Radio holo-
graphy
Telescope surface accuracy Radio "seeing" monitor Amateur radio astronomy SIMPLE inter-
ferometer
Astro-
photo-
graphy

Credits for pictures

The following colleagues have generously provided images for display here.

J. Rossa (1969-2009):
Hα images of NGC 891, NGC 4700, NGC 7090 and NGC 7462

M. Lehnert:
Hα images of NGC 1511 and NGC 3034

R. Swaters:
HI image of NGC 891.