NGC/IC Project Restoration Effort
(This is a very very beta version)
NGC5747
Basic Information
Location and Magnitude
Right Ascension: 14:44:20.7
Declination: +12:7:55
Constellation: BOO
Visual Magnitude: 13.6
Historic Information
Discoverer: Herschel W.
Year of discovery: 1784
Discovery aperture: 18.7
Observational
Summary description: eF, S
Sub-type: Sb
Corwin's Notes
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NGC 5747 = IC 4493. WH's single discovery observation is about 50 seconds of
time too far east. Bigourdan looked for NGC 5747 at WH's position and of
course saw nothing. He did find the object, however, and measured it twice.
He included it in his 4th list of new nebulae, so it received a number in the
second IC. Herschel's note on the object, quoted by Dreyer in the 1912
reprinting of Herschel's papers, reads, "An extremely faint nebula, it is
small and required some time to look at before it could be well seen." This
helps to explain the position error, but errors of this size are not uncommon
in others of WH's observations.
The object itself is a double interacting system. The two galaxies are so
closely connected that I've adopted a mean position for the NGC/IC numbers.
Steve's Notes
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NGC 5747
17.5" (6/20/01): fairly faint, small, round, 40" diameter, weak concentration. A mag 14 star lies 0.9' WNW of center while a brighter mag 12.5 star follows by 3.5'.