NGC 2451
DSS image of NGC 2451
Overlaid DSS image of NGC 2451, 120' x 120' with north at top and west to the right

Aladin viewer for the region around NGC 2451

Type  Open Cluster
Magnitude  2.8
Size  45'
Right Ascension  7h 45' 15.1"  (2000)
Declination  37° 58' 3" S
Constellation  Puppis
Description  Cl, vvL, vlC, one *4.5
Classification  II 2 p
Observing Notes

Andrew Cooper
Nov 24, 2023    Waikoloa, HI (map)
20cm f/6 Newtonian, Cave Astrola @ 76x
Seeing: 6 Transparency: 6 Moon: 0%

A spendid field! the brilliant orange star c Pup is surrounded by a scattering of 6th to 8th magnitude stars covering an area over a degree across, coarse, bright, obvious in the 50mm finder, fully resolved, the blue-white 5.9 magnitude HR 3011 lies 8' east of c Pup, while the matching blue white 5.9 magnitude HR 3022 lies 11' west, the very rich cluster NGC 2477 lies is 1.5° east-southeast, a stark contrast as NGC 2477 is a swarm of 11 to 12th magnitude stars compared to the bright and coarse NGC 2451, the entire region is a delight at low power magnification, in an RFT, or binoculars

Andrew Cooper
Jan 13, 2022    Lawa'i Beach, Kauai, Hawaii (map)
8x42mm Nikon Prostaff 3S Binoculars @ 8x
Seeing: 6 Transparency: 6 Moon: 0%

A rich group arranged around the 3rd magnitude star c Pup, bright and obvious, partially resolved, 1° diameter

Andrew Cooper
Oct 25, 2015    Camoapa, Nicaragua (map)
15cm f/5 Newtonian, Makaʻiki @ 19x
Seeing: 7 Transparency: 6 Moon: 0%

A bright knot of stars surrounding cPup, bright, coarse, fully resolved, an excellent RFT object

Andrew Cooper
Mar 16, 2007    Pu'u Kuainiho (map)
76mm f/6 APO

Large at almost 1° across, coarse, very bright, only a couple dozen stars, a bright orange in the center, NGC2477 visible 2° east in the same low power field

Andrew Cooper
Dec 27, 2002    Sentinel, AZ (map)
46cm f/4.5 Deep Violet

Large!! bright! sparse, nice orange star at the center
Other Data Sources for NGC 2451
Associated objects for NGC 2451
Nearby objects for NGC 2451
5 objects found within 60'
c Puppis HD 62226 HD 62893
HD 63215 HD 63465
Credits...

Drawings, descriptions, and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.

A complete list of credits and sources can be found on the about page

NGC 2451