Melotte 177, Mel 177, Collinder 342, Cr 342, Lund 767, C1736-369, C1737-369, OCl 1030
Aug 7, 2020 Waikoloa, HI (map)
20cm f/6 Newtonian, Cave Astrola @ 76x
A conspicuous cluster in a rich galactic starfield, about 10' across, bright, rich, resolved
Jun 29, 2019 Kaʻohe, Mauna Kea, HI (map)
20cm f/6 Newtonian, Cave Astrola @ 56x
A nice cluster beside the scorpion's tail, 10', rich, resolved, a pretty object for a low power telescope view
Here, coincidentally, is the next open cluster in the NGC after NGC 6396 (which see), and another object where John Herschel may have recorded the wrong wire -- his RA for the cluster is 40 seconds too small. In the sweep, he claims wire 2; if he actually observed the cluster leaving the field, his RA would be 17 40 06 for J2000, just six seconds of time off the actual RA.
As with NGC 6396, the cluster is too obvious to misidentify, even if John Herschel's mistake is not due to a wire error. He found this cluster, by the way, on 28 June 1834.
Drawings, descriptions, and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.
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