Astrophotography by Anthony Ayiomamitis

Deep Sky Object Image Gallery

Open star clusters are widely distributed in our galaxy and represent a loose collection of stars which number from a few dozen to a few hundred stars and are weakly-held gravitationally. Perhaps the three most famous such open clusters are the Pleiades (M45) in Taurus, the Beehive (M44) in Cancer and the double cluster in Perseus. They are all characterized with a handful of hot and white prominent stars and nebular material surrounding these stars.

Note: Open cluster NGC 2437 is one of three major open clusters in Puppis (along with M47 and M93). The cluster is relatively young with an estimated age of 300 million years old. It has an apparent diameter similar to that of the full moon, spanning 30 light-years across and comprised of approximately 500 member stars including many between magnitude 10 and 13. What makes this cluster most unique is the appearance of a planetary nebula (NGC 2438) within the same field of view. However, this is an optical illusion, for studies have confirmed that this nebula not only is not a member of the cluster but lies closer to us than the cluster itself. The cluster was first discovered by Charles Messier in 1771 and reported during the second revision of his catalog. The cluster lies to the east of Sirius and within the immediate vicinity of M47. NGC 2437 is best observed in winter as it approaches the southern meridian just before midnight.

Please click on the image below to display in higher resolution (1200 x 900)

Image Details
NGC 2437 - Open Cluster in Puppis
Imaging Details
NGC Number:
2437

Common Name(s):
N/A

Other Designations:
M46, Cr 159, Mel 75

Object Type:
Open Cluster

Object Classif:
II 2 r

Constellation:
Puppis

RA / Dec:
07h 41m 47s /
-14 48' 36"


Distance:
5,400 light-yrs

Object Size:
30' x 30'

Magnitude:
6.1
Date:
Jan 13, 2007
22:00 - 00:05 UT+2


Location:
Athens, Greece

Equipment:
AP 160 f/7.5 StarFire EDF
AP 1200GTO GEM
SBIG ST-2000XM
SBIG CFW10
SBIG LRGB + IR-block


Integrations:
Lum :  030 min (10 x 3 min)
Red :  030 min (05 x 6 min)
Green :  030 min (05 x 6 min)
Blue :  030 min (05 x 6 min)
Dark :  135 min (15 x 3+6 min)
Flat :  ~ 28,000 ADU
Binning :  1x1 (Lum),  1x1 (RGB)

Temperatures:
Ambient : + 10.5 C
CCD Chip : - 17.5 C

Software:
CCDSoft V5.00.182
CCDSharp V1.4
AIP4Win V2.1.19
Photoshop CS2