Andrew Cooper
Sep 23, 2025    Waikoloa, HI (map)
15cm f/4 Newtonian, Makaʻiki Mk2 @ 67x
Seeing: 6 Transparency: 7 Moon: 0%

Bright and obvious, an irregular clump of stars 5' in diameter, coarse, stars 9th to 10th magnitude, not particularly well detached from the surrounding rich galactic starfield, the brightest star is the 8.7 magnitude HD 168352 in the northwestern quadrant of the cluster, located 1.5° south of M17 the Swan Nebula

Andrew Cooper
Jun 29, 2019    Kaʻohe, Mauna Kea, HI (map)
20cm f/6 Newtonian, Cave Astrola @ 56x
Seeing: 8 Transparency: 7 Moon: 0%

A small bright cluster between M17 and the large star cloud of M24, small, bright, coarse, fully resolved.

Andrew Cooper
Aug 12, 2017    Waikoloa, HI (map)
Hodgepodge w/TV-76mm f/6 APO @ 30x
Seeing: 6 Transparency: 6 Moon: 0%

A small and non-descript cluster at low power, 5' across, coarse, not much more than a clump in the Milky Way starfield

Andrew Cooper
Apr 19, 2012    Hale Pohaku, HI (map)
46cm f/4.5 Newtonian, Deep Violet @ 175x
Seeing: 7 Transparency: 7 Moon: 0%

A poor, sparse cluster notable only for the brightness of those few members it does posess, about 10' across

Andrew Cooper
Apr 18, 2010    Hale Pohaku, HI (map)
46cm f/4.5 Newtonian, Deep Violet @ 60x
Seeing: 6 Transparency: 7 Moon: 0%

A coarse cluster in a rich field, a dozen 10th magnitude stars in a 10' area, lost in a very rich region

Andrew Cooper
Jun 6, 1998    TIMPA, Avra Valley, AZ (map)
20cm f/10 SCT

Sparse open cluster of about a couple dozen stars, strung out east-west, overall a poor object in this area of stellar wonders

Rev. T.W. Webb
May 19, 1885    Hardwick, Herefordshire, England (map)

Glorious field in a very rich vicinity; s lies a region of surpassing splendour.

― Celestial Objects for Common Telescopes, T. W. Webb, 1917

William Herschel
Jun 22, 1784    19 New King Street, Bath (map)

A cluster of coarsely scattered large stars, not rich.

Charles Messier
Jun 3, 1764    

A cluster of small stars, a little below above nebula, No. 17, surrounded by slight nebulosity, this cluster is less obvious than the preceding, No. 16: with an ordinary telescope of 3.5-foot, this cluster appears like a nebula; but with a good telescope one sees nothing but stars.

― Connaissance des Temps, 1781