NGC/IC Project Restoration Effort

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NGC4833

 

Basic Information


Location and Magnitude


Right Ascension: 12:59:35.0
Declination: -70:52:27
Constellation: MUS
Visual Magnitude: 8.4

Historic Information


Discoverer: Lacaille
Year of discovery: 1751
Discovery aperture: 0.5

Observational


Summary description: globular, B, L, R, g, vsbM, st 12
Sub-type: VIII

Corwin's Notes

===== NGC 4833. See NGC 6634.

Steve's Notes

===== NGC 4833 24" (4/12/08 - Magellan Observatory, Australia): at 260x this is a gorgeous highly resolved globular with several hundred stars splashed across the core and within a loose, well-resolved halo. The center is strongly compressed with a very bright 3' core surrounded by a large halo, roughly 10' in diameter. Beyond 5' or 6' out from the center the halo becomes scraggly but continues to extend out in loops and strings. A brighter mag 8.7 is superimposed in the halo, 2.5' N of center. 18" (7/10/02 - Magellan Observatory, Australia): This was a surprising find for a little known globular! At 171x, it appeared as a bright, fairly large globular of low concentration class. The loose halo was highly resolved and numerous stars were splashed across the brighter core. Many of the stars formed large loops and chains. A single bright star (mag 8.7 SAO 256996) is superimposed on the northern side of the halo. The core spans roughly 3', while outliers increase the overall halo to at least 10' [John Herschel gave similar dimensions]. Located 42' NNW of mag 3.6 Delta Muscae and 3¡ NE of gc NGC 4372 which is a comparable cluster.