NGC/IC Project Restoration Effort

(This is a very very beta version)

NGC188

 

Basic Information


Location and Magnitude


Right Ascension: 0:47:30.0
Declination: +85:15:30
Constellation: CEP
Visual Magnitude: 8.1

Historic Information


Discoverer: Herschel J.
Year of discovery: 1831
Discovery aperture: 18.3

Observational


Summary description: Cl, vL, R, 150-200 st 10…18
Sub-type: II2r

Steve's Notes

===== NGC 188 17.5" (12/26/00): At 100x, ~75 stars within 10'-12', roundish group. The cluster is fairly rich but unconcentrated with a noticeable void of stars near in the center and a somewhat ill-defined boundary. The stars appear to be layered with at least a dozen mag 12-13 stars superimposed on a much richer carpet of mag 14-15 stars over unresolved haze. At 220x, some additional very faint stars are visible bringing the total up to ~85. Two mag 9.5-10 field stars are just off the west edge and two mag 8.5-9 stars are beyond the eastern border. This is one of the older known open clusters with an age of ~6.3 billion years. 13" (8/24/84): about 50 stars at 62x with several mag 7-9 stars in field, appears fully resolved. 8": large cluster, many faint stars, not rich, blank areas near center.