Andrew Cooper
Jun 27, 2020    Waikoloa Quarry, HI (map)
28cm f/10 SCT, NexStar 11" GyPSy @ 127x
Seeing: 7 Transparency: 7 Moon: 0%

Quite bright, good sized at 10', fully resolved, very dense core, a lovely globular

Andrew Cooper
Aug 3, 2019    Kaʻohe, Mauna Kea, HI (map)
28cm f/10 SCT, NexStar 11" GyPSy @ 127x
Seeing: 6 Transparency: 6.5 Moon: 0%

Another of the small Sag globular clusters, small, bright, not resolved, very well concentrated

Andrew Cooper
Apr 3, 2011    Hale Pohaku, HI (map)
46cm f/4.5 Newtonian, Deep Violet @ 175x
Seeing: 8 Transparency: 7 Moon: 0%

Small, bright, about 5' across, well concentrated at the core, partially resolved

Andrew Cooper
Jun 12, 2010    Hale Pohaku, HI (map)
46cm f/4.5 Newtonian, Deep Violet @ 262x
Seeing: 8 Transparency: 7.5 Moon: 0%

Small, bright, not resolved, very concentrated core

Andrew Cooper
Apr 18, 2010    Hale Pohaku, HI (map)
46cm f/4.5 Newtonian, Deep Violet @ 175x
Seeing: 6 Transparency: 7 Moon: 0%

Bright, small, 4' across, very concentrated core, just starting to resolve

Andrew Cooper
Jun 13, 1999    Pinal Peak, AZ (map)
20cm f/10 SCT

Smaller globular, unresolved

Charles Messier
Jul 24, 1778    

Very faint nebula, discovered in Sagittarius; its center is brilliant & it contains no star, seen with an achromatic telescope of 3.5 feet. Its position has been determined from Zeta Sagittarii, of 3rd magnitude.

― Connaissance des Temps, 1781

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