NGC 7331 in Pegasus
Object data - NGC 7331
Telscope & Camera:
Exposure time total:
2016-08-07 + 08 + 13 + 23 + 25 + 30 + 31 + 2016-09-07
Gahberg observatory, Upper Austria
110mm APO by Williams optics (property of Dr. Alois Regl)
Artemis 4021 CCD + Baader filters (property of Dr. Alois Regl)
ASA DDM 60 pro (property of AAS)
Luminance 728 min / R 285min, G 272min, B 290min
spiral galaxy (SA(s)b D)
10.4’ x 4.2’
+9.48 mag (V)
~ 14.5 Mpc
telescope, CCD camera and mount can be used by all AAS-members as
the galaxies on the left side of NGC 7331 - NGC 7335 - 7337 and
NGC 7340 are in the background.
There is a new publication about dwarf galaxies around NGC 7331,
published by I. D. Karachentsev and members of the TBG-project.
This was also published in “Astrofisica”, Vol. 60, page 317-321.
Object data - “Stephans Quintett”
spiral galaxies (interacting)
~ 13.50 mag (V)
V = 5700 - 6760 km/s
four of the five galaxies form aphysical association (NGC 7317 - 7319);
NGC 7320 is in the foreground (V 786 km/s); today, NGC 7320C can be
seen as member nr. 5 of the quintett.
discovered by Édouard Stephan in 1877;
< 2’ each galaxy