NGC/IC Project Restoration Effort
(This is a very very beta version)
NGC7756
Basic Information
Location and Magnitude
Right Ascension: 23:48:28.5
Declination: +4:7:32
Constellation: PSC
Visual Magnitude: 12.8
Historic Information
Discoverer: Parsons L.
Year of discovery: 1873
Discovery aperture: 72.0
Observational
Summary description: Neb, 5' sp h 2270
Sub-type: *
Corwin's Notes
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NGC 7756. Ralph Copeland (or perhaps the fourth Earl of Rosse, if he was
observing the night of 11 December 1873) puts this object five arcminutes
southwest of NGC 7757 using the Birr Leviathan. The original description
reads in full "Another neb about 5' sp." Not much to go on!
There is a star in the area that was taken by MCG and RC1 as N7756, and I've
put a colon on it as it seems the most likely object. However, Copeland also
has measures of two other stars just north of N7757 in his observation. Both
of them are about the same magnitude as the star to the southwest. This makes
me wonder why LdR didn't see them as nebulae as well.
It also lead me to poke around the area a bit. There is a close double star
-- quite faint, though -- closer to N7757, and a somewhat brighter and much
wider double further south. Neither seems a likely candidate to me, but there
isn't much else around that LdR could have seen with the Leviathan.
Earlier, I had also suggested a star with a "faint galaxy" at 23 48 29.17,
+04 02 52.8 (J2000; HCsv; previous approximate coordinates were 28.7 and 57
for the seconds of time and arc). The "galaxy" is a defect on the blue POSS1
plate, and the star by itself would not attract attention. So, I've deleted
the object from the position table.