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[AZ-Observing] NGC 7464

  • From: BillFerris@xxxxxxx
  • To: az-observing@xxxxxxxxxxxxx
  • Date: Sun, 22 Sep 2002 18:56:12 EDT
Ken Hewitt-White's "deep-sky notebook" article in the October, 2002, issue of
_Sky & Telescope_ includes mention of three faint galaxies in Pegasus. These
are NGC 7473, NGC 7464 and NGC 7565. This trio is located 1-degree northwest 
of
2.5 magnitude Markab, the star at the southwest corner of the Great Square
asterism.

I have observed NGC 7463 and NGC 7465 with my 10-inch Newtonian. NGC 7463 is
the more elongated of the two, appearing 3'x1' at 129X in the 10-inch, f/4.5
Starfinder. By comparison, NGC 7465 presents a 60" diameter glow and a 
stellar
core. NGC 7463 has a visual magnitude of 13.2 and surface brightness of 22.9
magnitude per square arcsecond. NGC 7465 shines at magnitude 12.6 and has a
surface brightness of 22.7 magnitude per square arcsecond.

Based on my observation and sketch
(<A 
HREF="http://hometown.aol.com/billferris/n74637465.html";>http://hometown.aol.com/billferris/n74637465.html</A>
 ), NGC 7465 may have a
somewhat higher surface brightness within a 1-arcminute radius of the core. 
The
bright star shown 3' to the west of this galaxy pair in my drawing glows at 
8th
magnitude, according to the GSC. The string of four stars to the northwest in
the sketch range from 11th to 13th magnitude in brightness.

I have not observed NGC 7464 with the 10-inch. Hewitt-White describes this
stellar metropolis as having a visual magnitude of 13.3 and a diameter of 0.5
arcminute. That translates to a surface brightness of 20.4 magnitude per 
square
arcsecond, which is quite bright. I should have seen this object in the 
10-inch
and did devote some time to the task. However, it eluded me.

Has anyone on this list observed NGC 7464 with small or moderate aperture? 
Would you mind sharing your notes?

Regards,

Bill Ferris
"Cosmic Voyage: The Online Resource for Amateur Astronomers"
URL: http://www.cosmic-voyage.net


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