Type | Open Cluster |
---|---|
Magnitude | 9.5 |
Size | 5' |
Right Ascension | 17h 28' (2000) |
Declination | 29° 29' S |
Constellation | Ophiuchus |
Description | 13"-pB, L, nC, sRi at 100X, 32* |
Classification | III 2 p |
Andrew Cooper
Aug 6, 2021 Waikoloa, HI (map)
46cm f/4.5 Newtonian, Deep Violet @ 95x
Seeing: 5 Transparency: 6 Moon: 0%
Bright and obvious, a 5' clump in a rich galactic starfield, coarse, resolved, defined by a couple dozen 11-12th magnitude stars
Andrew Cooper
Jul 13, 2021 Waikoloa, HI (map)
20cm f/6 Newtonian, Cave Astrola @ 76x
Seeing: 5 Transparency: 6 Moon: 18%
Good sized at 5', bright, obvious, resolved, not well defined appearing as a dense patch in the rich galactic starfield
d Ophiuchi | ESO 455-11 | HD 157955 |
PK357+2.5 | PK357+3.1 | PK357+3.4 |
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