Andrew Cooper
Dec 12, 2021    Waikoloa, HI (map)
20cm f/6 Newtonian, Cave Astrola @ 76x
Seeing: 6 Transparency: 7 Moon: 0%

Big, bright, a coarse cluster that fills the 1° field with 5th to 8th magnitude stars the bright 10 Mon at the center, a brighter clump trails south from 10 Mon with half a dozen 7th to 8th magnitude stars reaching south 20' in rich galactic starfield

Andrew Cooper
Dec 12, 2021    Waikoloa, HI (map)
40mm f/3.6 Finder @ 12x
Seeing: 6 Transparency: 7 Moon: 0%

A distinct clump of 5th to 7th magnitude stars in the 40mm finder, ½° across, surrounded by the glow of NGC 2237 in a rich galactic starfield

Andrew Cooper
Dec 12, 2021    Waikoloa, HI (map)
20cm f/6 Newtonian, Cave Astrola @ 76x
Seeing: 6 Transparency: 7 Moon: 0%

A large, coarse, bright cluster filling the field the bright star 12 Mon a bit southeast of center, 5th to 7th magnitude stars making up the brighter complement, the faint glow of NGC 2237 pervades the field most notable when panning the 'scope

Andrew Cooper
Jan 26, 2020    Kaʻohe, Mauna Kea, HI (map)
46cm f/4.5 Newtonian, Deep Violet @ 60x
Seeing: 7 Transparency: 7 Moon: 0%

Big, a full degree across, bright, coarse, fully resolved, a few dozen 6-8 magnitude stars with the 5.1 magnitude 10Mon near the center, a striking object even in the rich galatic starfield

Andrew Cooper
Mar 17, 2004    Sycamore House, Tucson, AZ (map)
28cm f/10 SCT Nexstar 11

Very large! Bright! Coarse, two groups of stars, to the northwest is a short chain of 6th magnitude stars, to the southeast is a group around the 5th magnitude 10 Mon, an RFT object

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

6 pale yellow, the lucida of an excellent group, visible with the naked eye. The Galaxy throughout this region well repays the trouble of sweeping.

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

Captain William Henry Smyth
Dec 28, 1832    No. 6 The Crescent, Bedford, England (map)
150mm f/17.6 refractor by Tully 1827

[From entry CCXLIX 10 Mon] A wide double star in an elegant group, on the Unicorn's right fore-knee: it is about 12½° in an occult line carried from Sinus a little to the west of Capella, and directly between β in the Lesser Dog and α Leporis. A 6, pale yellow; B 9, orange, with a comes to the south. Though this object is a capital one for testing the performance of a telescope, it has not been classed among the clusters [Herchel cataloged the cluster H VIII 25 in 1779 --> NGC 2232]. Piazzi, in his note upon 116 VI., says, "plures telescopicae simul conspicuas."

― A Cycle of Celestial Objects Vol II, The Bedford Catalogue, William Henry Smyth, 1844

Drawings, descriptions, and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.

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