NGC2287 - M41
DSS image of NGC2287
Digitized Sky Survey image of NGC2287, 60' x 60' with north at top and west to the right

DSS image of NGC2287
Overlaid DSS image of NGC2287, 60' x 60' with north at top and west to the right
Collinder 118, Cr 118, ESO 557-SC 014, GC 1454, h 411, Lund 256, Mel 52, Melotte 52

Type  Open Cluster
Magnitude  4.5
Size  38'
RA (2000)  6h 46' 0.0"
Dec (2000)  20° 45' 15" S
Constellation  Canis Major

Observing Notes

Andrew Cooper
14 Feb 2016 Waikoloa, HI (map)
20cm f/10 SCT, Celestron C8 @ 57x

Large, sparse, coarse, 30' in diameter, not a great target for a 2m focal length telescope, even a low power eyepiece barely fits the cluster.

Andrew Cooper
9 Jan 2016 KaʻOhe, Mauna Kea, HI (map)
28cm f/10 SCT, NexStar 11" GyPSy @ 80x

A field of bright stars fills the entire width of the 35mm eyepiece, even at low power the cluster is wider than the field, stars arranged in distinct chains and clumps across the field, quite pretty!

Andrew Cooper
14 Sep 2015 Hale Pohaku, HI (map)
15cm f/5 Newtonian, Makaʻiki @ 19x

A bright cluster 3° south of Sirius, coarse, fully resolved, almost 20' in diameter, an object best appreciated at lower powers

Andrew Cooper
1 Mar 2011 Hale Pohaku, HI (map)
46cm f/4.5 Newtonian, Deep Violet @ 60x

A fine cluster that fills the 1° field, rich, bright, visible to the unaided eye, a notable orange star at the center of the cluster also noted by Webb

Andrew Cooper
2 Nov 2008 Hale Pohaku, HI (map)
12x36 Canon Image Stabilized Binoculars @ 12x

A better binocular object than telescopic object, bright! visible to the unaided eye, a conspicuous object in the center of CMa below Sirius, rich, fully resolved, about ½° in diameter

Andrew Cooper
9 Feb 2007 Waimea, HI (map)
76mm f/6 APO

Loose open cluster, sparse, a few dozen bright stars and very few dim members apparent, round, clumpy, fully resolved, 3° due south of Sirius in the center of CMa

Andrew Cooper
22 Oct 2006 TIMPA, Avra Valley, AZ (map)
12x36 Canon Image Stabilized Binoculars

Bright, good sized, fully resolved, good bino object, east to find one field due south of Sirius

Andrew Cooper
5 Feb 1998 Sycamore House, Tucson, AZ (map)
20cm f/10 SCT

Wide sparse cluster, 60 or so stars visible, brightest central star shows orange (with cluster?).

William Herschel
20 Oct 1784

A large cluster of very coarsely scattered large stars.

Charles Messier
16 Jan 1765

Cluster of stars below Sirius, near Rho Canis Majoris; this cluster appears nebulous in an ordinary telescope of one foot; it is nothing more than a cluster of small stars."

Rev. T.W. Webb
Hardwick, Herefordshire, England (map)
14cm f/15 Clarke Refractor

Superb group, visible to naked eye, '51, 4° beneath α. Larger stars in curves, with ruddy star (Es. var. ?) near centre, 5½-in. h. says the latter frequently occurs in clusters.
Other Data Sources for NGC2287
Nearby objects for NGC2287
2 objects found within 120'
NGC2287 BD -20 1569
Acknowledgements and Credits...

Drawings, descriptions and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission. Use for non-profit and educational reasons is generally given on request.

Positional and some physical information is from the NASA/IPAC Extragalactic Database (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.

Additional object data from the SIMBAD database, operated at CDS, Strasbourg, France.

The Digitized Sky Survey was produced at the Space Telescope Science Institute under U.S. Government grant NAG W-2166. The images of these surveys are based on photographic data obtained using the Oschin Schmidt Telescope on Palomar Mountain and the UK Schmidt Telescope.

Dark nebulae data from E.E. Barnard, A Photographic Atlas of Selected Regions of the Milky Way. Ed. Edwin B. Frost and Mary R. Calvert. Carnegie Institution of Washington, 1927

Object descriptions of Rev. Webb from Celestial Objects for Common Telescopes sixth edition, Rev. T.W. Webb, 1917, edited by Rev T.E.Espin.