NGC 2420
DSS image of NGC 2420
Overlaid DSS image of NGC 2420, 30' x 30' with north at top and west to the right

Aladin viewer for the region around NGC 2420
H VI 1, h 458, GC 1549, Mel69, Melotte 69, Raab 56, Cr154, Collinder 154, Lund 364, C 0735+216, OCL 488

Type  Open Cluster
Magnitude  8.3
Size  10'
Right Ascension  7h 38' 24.0"  (2000)
Declination  21° 34' 27" N
Constellation  Gemini
Description  I 1 r
Classification  Cl, cL, Ri, C, st 11...18
Observing Notes

Andrew Cooper
Mar 1, 2011    Hale Pohaku, HI (map)
46cm f/4.5 Newtonian, Deep Violet @ 175x
Seeing: 6 Transparency: 6 Moon: 0%

Bright, rich, very distinct, a rich cluster about 7' across, about a dozen brighter members against a dim population

Andrew Cooper
Mar 21, 2004    Farnsworth Ranch, Pima Co., AZ (map)
28cm f/10 SCT

Small, dim, rich, fully resolved, thick patch about 10' across, thick galactic star field, chain of stars across south edge

Rev. T.W. Webb
May 19, 1885    Hardwick, Herefordshire, England (map)
24cm Reflector

Faint mass of very small stars. h., 11-18 mg. Beautiful and in rich region; 9-in. spec.
― Celestial Objects for Common Telescopes, T. W. Webb, 1917

Captain William Henry Smyth
Nov 25, 1835    No. 6 The Crescent, Bedford, England (map)
150mm f/17.6 refractor by Tully 1827

A compressed cluster under the left shoulder of Pollux; and rather more than one-third of the distance from β Geminorum to β Canis Minoris, following Wasat nearly on the parallel, at about 4°. This was first registered by ♅. in 1783; and was described as a "beautiful cluster of many large and compressed small stars, about 12' in diameter." My telescope only shows a faint mass of very small stars, inclining from sp to nf, but of indistinct figure, the objects being from the 10th to the 16th magnitude. It is No. 458 of H.'s Catalogue; and was carefully differentiated with "Wasat (δ Geminorum).
― A Cycle of Celestial Objects Vol II, The Bedford Catalogue, William Henry Smyth, 1844
Other Data Sources for NGC 2420
Nearby objects for NGC 2420
1 object found within 120'
79 Geminorum
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 2420