NGC/IC Project Restoration Effort

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NGC1823

 

Basic Information


Location and Magnitude


Right Ascension: 5:3:25.0
Declination: -70:20:8
Constellation: MEN
Visual Magnitude: 12.1

Historic Information


Discoverer: Herschel J.
Year of discovery: 1836
Discovery aperture: 18.3

Observational


Summary description: Cl, pF, L, iF, st 12…15
Sub-type: OCL

Corwin's Notes

===== NGC 1823. "The most compressed part of a pF, L, branching cl of stars 12...15m." The contrast between the cluster at the core of this star cloud and the remainder of the cloud itself is more striking than JH's description suggests. The cluster itself is only about 30 arcsec across, while the star cloud covers an area of 9 arcmin by 6 arcmin. There are at least two other clusters involved in the cloud (or at least in the line of sight), one about 4 arcmin west-northwest, the other 4.5 arcmin south-southeast.

Steve's Notes

===== NGC 1823 30" (11/6/10 - Coonabarabran, 264x): fairly bright irregular cluster with 8 or 9 resolved stars within 45". Five of the resolved stars are collinear on the west side oriented ~N-S. Second of three clusters with NGC 1813 4' WNW and S-L 200 4' SSE and the surrounding field is filled with a scattering of mag 12-13 stars and a large number of fainter stars (this is the stellar association LH 18). S-L 200 is the largest of the three clusters, 1.2'x0.6' extended N-S, with several stars resolved over a hazy background or emission glow and a detached group of 4 stars off the south end.