Type | Globular Cluster |
---|---|
Magnitude | 7.5 |
Size | 11' |
Right Ascension | 21h 40' 22.1" (2000) |
Declination | 23° 10' 48" S |
Constellation | Capricornus |
Description | !, B, L, lE, gpmbM, st 12...16 |
Classification | V |
Andrew Cooper
Jul 23, 2020 Waikoloa, HI (map)
20cm f/6 Newtonian, Cave Astrola @ 61x
Seeing: 5 Transparency: 7 Moon: 0%
Bright, pretty, resolved, modest core, about 10' in diameter, an excellent globular cluster in an otherwise sparse region of the sky
Andrew Cooper
Jun 27, 2020 Waikoloa Quarry, HI (map)
28cm f/10 SCT, NexStar 11" GyPSy @ 127x
Seeing: 7 Transparency: 7 Moon: 0%
Big at about 10', bright, a dense core, fully resolved, a very lovely globular cluster
Andrew Cooper
Aug 11, 2018 Kaʻohe, Mauna Kea, HI (map)
28cm f/10 SCT, NexStar 11" GyPSy @ 233x
Seeing: 7 Transparency: 7 Moon: 0%
Large, bright, well concentrated core, fully resolved, two conspicuous chains of stars radiate from the core to the west
Andrew Cooper
Apr 19, 2012 Hale Pohaku, HI (map)
46cm f/4.5 Newtonian, Deep Violet @ 175x
Seeing: 6 Transparency: 7 Moon: 0%
A curiously irregular globular cluster, oddly asymmetric with two chains of brighter stars emerging from the core to the northwest, about 7' diameter, bright
Andrew Cooper
Apr 18, 2010 Hale Pohaku, HI (map)
46cm f/4.5 Newtonian, Deep Violet @ 175x
Seeing: 6 Transparency: 7 Moon: 0%
Good sized at 10' across, bright, well resolved, a number of brighter stars involved including two odd chains that extend away from the core to the north
Andrew Cooper
Aug 27, 2005 TIMPA, Avra Valley, AZ (map)
46cm f/4.5 Deep Violet
Rich, fully resolved, good sized, core not particularly dense, edges seem ragged and uneven, two lines of brighter stars radiating out from the north side of the cluster
Rev. T.W. Webb
May 19, 1885 Hardwick, Herefordshire, England (map)
94mm f/18 Tully Achromat
Moderately bright; beautifully contrasted with an 8 mg. star beside it; comet-like with 64; with higher powers resolvable (into 12 mg. stars. h.) ' What an immensity of space is indicated! Can such an arrangement be intended, as a bungling spouter of the hour insists, for a mere appendage to a speck of a world on which we dwell, to soften the darkness of its petty midnight? This is impeaching the intelligence of Infinite Wisdom and Power, in adapting a grand means to so disproportionate an end. No imagination can fill up the picture, of which the visual organs afford the dim outline; and he who confidently probes the Eternal Designs cannot be many removes from lunacy' (Sm.) E. of Rosse, spiral arrangement of branches. It lies closely p a little n from 41, a 5 mg. star.― Celestial Objects for Common Telescopes, T. W. Webb, 1917
Charles Messier
Oct 24, 1764
Nebula discovered below the tail of Capricornus, very near to the star 41 of that constellation, of 6th magnitude, according to Flamsteed. One sees it with difficulty with an ordinary telescope of 3.5-foot. It is round & contains no star; its position determined from Zeta Capricornusi, M. Messier reported it on chart of the Comet of 1759. Mem. Acad. 1760, pl. II.― Connaissance des Temps, 1781
William Herschel
A brilliant cluster, the stars of which are gradually more compressed in the middle. It is insulated, that is, none of the stars in the neighborhood are likely to be connected with it. Its diameter is from 2'40" to 3'30". The figure is irregularly round. The stars about the centre are so much compressed as to appear to run together. Towards the north, are two rows of bright stars 4 or 5 in a line.
Drawings, descriptions, and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.
A complete list of credits and sources can be found on the about page