Type | Globular Cluster |
---|---|
Magnitude | 9.4 |
Size | 5.9' |
Right Ascension | 20h 53' 27.6" (2000) |
Declination | 12° 32' 14" S |
Constellation | Aquarius |
Description | pB, pL, R, gmCM, rrr |
Classification | IX |
Andrew Cooper
Sep 12, 2020 Waikoloa, HI (map)
20cm f/6 Newtonian, Cave Astrola @ 135x
Seeing: 5 Transparency: 7 Moon: 0%
A modest globular, faint, unresolved, no notable core, about 4' across, a bit over 1° west of M73
Andrew Cooper
Jun 27, 2020 Waikoloa Quarry, HI (map)
28cm f/10 SCT, NexStar 11" GyPSy @ 127x
Seeing: 7 Transparency: 7 Moon: 0%
Small at well less than 5', partially resolved, a modest core, a modest globular cluster overall
Andrew Cooper
Aug 11, 2018 Kaʻohe, Mauna Kea, HI (map)
28cm f/10 SCT, NexStar 11" GyPSy @ 233x
Seeing: 7 Transparency: 7 Moon: 0%
Small, bright, partially resolved, no notable concentration at the core
Andrew Cooper
Apr 19, 2012 Hale Pohaku, HI (map)
46cm f/4.5 Newtonian, Deep Violet @ 175x
Seeing: 7 Transparency: 7 Moon: 0%
Small, 3' diameter, modest globular, just resolved
Andrew Cooper
Apr 18, 2010 Hale Pohaku, HI (map)
46cm f/4.5 Newtonian, Deep Violet @ 175x
Seeing: 6 Transparency: 7 Moon: 0%
Not very bright, fully resolved, modest core, about 3' across
Andrew Cooper
Sep 5, 2008 Hale Pohaku, HI (map)
28cm f/10 SCT Gypsy @ 233x
Seeing: 6 Transparency: 7.5 Moon: 0%
Modest globular about 5' in diameter, fully resolved, core not concentrated, M73 is 1°20' east
Andrew Cooper
Oct 21, 2006 TIMPA, Avra Valley, AZ (map)
12x36 Canon Image Stabilized Binoculars
Dim, difficult to see or locate, but easy to confirm as it forms an equilateral triangle with a mag 6 and mag 7 star, small, round, not resolved, M73 1/2 (1°20') field east
Andrew Cooper
Jun 28, 1998 Santa Rita Mts., AZ (map)
20cm f/10 SCT
Rather dim, no stars resolved
Charles Messier
Oct 4, 1780
Nebula seen by M. Méchain in the night of August 29-30, 1780, above the neck of Capricornus. M. Messier looked for it on the 4th and 5th October following: the light is as faint as for the preceding [M71]; near it is a small telescopic star: the position was determined from the star Nu Aquarii, of fifth magnitude.― Connaissance des Temps, 1781
8 Aquarii | 9 Aquarii | DV Aqr |
HD 198431 | IC 1330 | IC 1332 |
IC 1341 | IC 1342 | IC 1344 |
IC 1345 | MCG -02-53-003 | Messier 73 |
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