NGC/IC Project Restoration Effort

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NGC6421

 

Basic Information


Location and Magnitude


Right Ascension: 17:45:44.0
Declination: -33:41:14
Constellation: SCO
Visual Magnitude:

Historic Information


Discoverer: Herschel J.
Year of discovery: 1834
Discovery aperture: 18.3

Observational


Summary description: Cl, vL, pRi, st 8…12
Sub-type: *Grp

Corwin's Notes

===== NGC 6421 is a brighter patch in the Milky Way that matches JH's description and sketch pretty well. His position is pretty good, too. Note, however, that the NGC description (taken from GC) is wrong. The correct description, from the CGH Observations, should read something like "Cl, vL, r, connected to Milky Way." I suspect that the NGC description was copied by mistake from the CGH entry for h3702 = N6416, because the prime symbol is missing from the 3702 in the JH column in the NGC. Neither this object nor N6415 were numbered in the CGH Observations, and JH does not have a note for either in GC indicating why he entered them there even though he chose to not number them for CGH. Dreyer copied the entries unchanged into NGC, also without notes.

Steve's Notes

===== NGC 6421 24" (7/7/13): large, bright Milky Way cloud at 125x (50' field). Sharply defined by dust clouds on the west edge and along the east side up to the north end. Includes a nice string of a half-dozen stars (mag 9.5-11.5) on the southeast side and a couple of 1' pairs (oriented N-S) of mag 10.5-11.5 stars are at the east end of the cloud.