NGC/IC Project Restoration Effort
(This is a very very beta version)
NGC7654
Basic Information
Location and Magnitude
Right Ascension: 23:24:48.0
Declination: +61:36:0
Constellation: CAS
Visual Magnitude: 6.9
Historic Information
Discoverer: Messier
Year of discovery: 1774
Discovery aperture: 3.5
Observational
Summary description: Cl, L, Ri, mCM, R, st 9…13
Sub-type: I2r
Corwin's Notes
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NGC 7654 = M 52. The NGC position (from JH) is for SAO 20606, west of the
cluster itself. The cluster has a tight core of perhaps a dozen stars, but
this is not at the geometrical center of the cluster. Hence, I've listed a
few positions in the table -- one from DSS2R (source HCsv) includes a mostly
detached clump to the northeast. Take whichever position seems appropriate to
you.
JH has the diameter of just 6 arcminutes, but this applies only to the region
just northwest with the "core" at its southeastern end. The cluster actually
sprawls a bit and looks to cover about 15 arcminutes in the DSS2R field.
Steve's Notes
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NGC 7654
13.1" (9/29/84): 150-175 stars in a 15' diameter, a mag 8 star (SAO 20606) is on the WSW edge of the cluster. NGC 7635, the "Bubble Nebula", lies 35' SW.
17.5" (8/2/86): fills 21' field, fully resolved at 105x.
15x50mm binoculars (9/6/10): prominent roundish glow ~10-15' diameter located 40' S of 5th magnitude 4 Cas and on a line with Alpha (Schedir) and Beta (Caph) Cas. A few mag 8-9 stars are resolved.