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NGC 2453
NGC 2453, Cl Collinder 162, C 0745-271, Ocl 670, h 3101, GC 1575
RA: 07h 47m 35s
Dec: −27° 11′ 42″
Con: Puppis
Ch: MSA:367, U2:320, SA:19
Ref: SIMBAD, Collinder (1931), DAML02, Archinal&Hynes (2003)
Type: open cluster, 13m
Mag: B=8.39, V=8.3
Size: 4′
PA: ?
Historical observations
John Herschel (1847) Cape Observations
Discovered by Sir John Herschel at the Cape of Good Hope with an 18-inch f/13 speculum telescope. He recorded it as "a small but condensed cluster, Class VII. Pretty rich. Diameter 3'. (This is the cluster referred to, as in the field with the Planetary Nebula [NGC 2452])."
Published comments
Helwan Obs. Bulletin No 15 (1915)
a small loose cluster.
Trumpler, R.J. (1928)
Trumpler (Lick Obs Bul, Vol 14, No. 420) gives the diameter as 4' and the class as 1 3 p.
Photo index
Photo Index by Jim Lucyk: Sky&Tel. 4/70 p221, Deep Sky #17 Wi86 p11.
Sulentic & Tifft (1973)
The RNGC (Sulentic and Tifft 1973) notes that this is a 9.0 mag open cluster.
Modern observations
Steve Coe
Steve Coe, in SACNEWS On-Line for February 1996, writes: "NGC 2453 is pretty bright, pretty small, pretty compressed, not rich. I counted 17 stars, one of 10th mag and the others from 11 to 13 magnitude. The 10th mag star is a nice dark yellow at 135X. This cluster was just seen in the 11X80 finder. It is located at 7 hr 47.8 min -27 14."
AJ Crayon
AJ Crayon, using an 8" f/6 Newtonian, notes: "is an open cluster. It is 5' 9m, has a 10m star, a 9m star at the northwest edge, a 10m star to the southeast edge and 15* 12...13m limit in glow of unresolved star, at 100x. Don't forget to look for NGC 2452 10' south."
Steve Coe
Steve Coe, observing with a 13" f/5.6, notes: "Pretty bright, pretty small, pretty compressed, not rich. I counted 17 stars, one of 10th mag and the others from 11 to 13. The 10th mag star is a nice dark yellow at 135X. This cluster was just seen in the 11X80 finder."
Contemporary observations
Magda Streicher
(no date)
16-inch f/10 SCT (127x, 290x)
This is a tight cluster with various magnitude stars. Somehow flare out to the northern side. The faint grey glow of the planetary is easy seen to the south of the grouping.
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Favourite lists
Lacaille's catalogue
The Messier objects
Dunlop's catalogue
The Bennett objects
The Caldwell list
Named DSOs
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