NGC/IC Project Restoration Effort

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NGC1955

 

Basic Information


Location and Magnitude


Right Ascension: 5:26:10.0
Declination: -67:29:51
Constellation: DOR
Visual Magnitude: 9.0

Historic Information


Discoverer: Dunlop
Year of discovery: 1826
Discovery aperture: 9.0

Observational


Summary description: Cl, Ri, 2nd of sev
Sub-type: OCL+EN

Corwin's Notes

===== NGC 1955. See NGC 1974 = NGC 1991, as well as the "notngc" files where JH is quoted as having seen another cluster ("h2863 Note") in the area.

Steve's Notes

===== NGC 1955 30" (11/5/10 - Coonabarabran, 264x): this cluster and emission nebula is near the western end of a beautiful curved chain of bright clusters involved with prominent nebulosity (referred to as the "Sextant Arc") that extends 17' WSW to ENE and includes NGC 1966 and NGC 1974 to the NE and S-L 456, a group of stars and nebulosity 4' W of NGC 1955. The cluster, which is part of stellar association LH 54, includes as many as 40 stars in a 4' region including a half-dozen mag 11.5-12.5 stars in a 3' gently curving arc elongated E-W. The cluster is immersed in a large, irregular haze that is brightest on the eastern side in a 30" circular glow. This is a locally brighter portion of a large irregular loop bowed out to the east and extending N-S for 6'-7' to a mag 9.5 star 3.5' S of the cluster. A fainter group of stars and haze lies 4' W (S-L 456 within association LH 51) and the DSS reveals both halves form an 8' bubble (LHa 120-N51D) like a Wolf-Rayet shell or supernova remnant. NGC 1968 lies ~8' ENE and NGC 1974 11' NE.