NGC/IC Project Restoration Effort

(This is a very very beta version)

NGC6553

 

Basic Information


Location and Magnitude


Right Ascension: 18:9:15.6
Declination: -25:54:26
Constellation: SGR
Visual Magnitude: 8.3

Historic Information


Discoverer: Herschel W.
Year of discovery: 1784
Discovery aperture: 18.7

Observational


Summary description: globular, F, L, lE, vglbM, rr, st 20
Sub-type: XI

Steve's Notes

===== NGC 6553 24" (7/30/16): at 260x, moderately bright and large, ~3' diameter, weak concentration with no well defined core. A mag 11.8 star is on the northwest side of the halo and fainter stars are on the northeast side (pair) and southwest side, bounding the cluster into a somewhat rectangular appearance. At 432, the cluster was very lively or mottled with a couple of additional resolved stars and others just on the verge of resolution. A few additional stars were resolved around the edges of the halo. 17.5" (6/6/86): grainy, mottled globular with a single bright star at the north edge and four or five additional stars at the edges may also be resolved members. Located in a rich field. Brightest member star V =14.7. 8" (7/31/81): fairly bright, moderately large. A single star is at the north edge, elongated or fan-shaped N-S, no resolution.