NGC/IC Project Restoration Effort

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NGC7099

 

Basic Information


Location and Magnitude


Right Ascension: 21:40:22.0
Declination: -23:10:43
Constellation: CAP
Visual Magnitude: 6.9

Historic Information


Discoverer: Messier
Year of discovery: 1764
Discovery aperture: 3.5

Observational


Summary description: !, globular, B, L, lE, gpmbM, st 12…16
Sub-type: V

Steve's Notes

===== NGC 7099 48" (10/24/14): the first of three bright stars in a string directly to the north of the core (~40" N of center) was clearly orange (red-giant) as well as the first of a string of three bright stars starting at the west edge of the core (~55" W of center) extending northwest. A few other brighter stars either appear yellow or very pale orange! 17.5" (8/17/01): viewed at 575x in excellent seeing. Very irregular appearance with strings of stars emanating from an irregular bright, partially resolved core. A prong off the west side heads northwest and includes three equally spaced similar stars along with a close triple. Another bright line of three stars heads due north with a fainter bent elbow of stars angling towards the NE. Roughly a dozen stars trail to the east with a large gap towards the edge of the halo. A fairly well defined semi-circle of stars open to the north passes directly through the core and off the SE side. The outer halo is peppered with dozens of faint stars over a dim background haze and with concentration the overall diameter increases significantly to at least 10'. 17.5" (7/5/86): the small bright core is not resolved but the halo is well resolved into 50-60 stars. A small circular detached piece is east of the core with resolved stars. Along the north side the resolved stars are brighter and arranged in lanes. 13" (9/29/84): fascinating view at 350x; ~25 stars resolved in the outer halo. A few stars (half dozen) are bunched together near the bright, unresolved irregular core over a fainter diffuse halo. 13": three star lanes are obvious on the north side. Good resolution in the halo and outer stragglers. The core appears on the verge of resolution at 288x. 8" (10/4/80): two short straight star lanes to north and NW give a unique "prong" appearance. A few faint stars are resolved southeast of the core but the core is unresolved.