NGC/IC Project Restoration Effort

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NGC5946

 

Basic Information


Location and Magnitude


Right Ascension: 15:35:28.5
Declination: -50:39:32
Constellation: NOR
Visual Magnitude: 8.4

Historic Information


Discoverer: Dunlop
Year of discovery: 1826
Discovery aperture: 9.0

Observational


Summary description: globular, cB, pL, R, vglbM, rrr, st 16
Sub-type: IX

Corwin's Notes

===== NGC 5946 (= IC 4550, which see) may have been first seen by James Dunlop. Glen Cozens, examining a copy of Dunlop's original observing log and reductions, has found about a dozen objects that did not make it into Dunlop's published list. The bright globular N5946 is probably one of them. Glen hasn't yet found a reason for Dunlop to exclude the objects from publication, though he (Glen) is pretty sure about the identification in this case.

Steve's Notes

===== NGC 5946 18" (7/6/05 - Magellan Observatory, Australia): at 128x this globular appeared moderately bright, moderately large, round. The halo extends to 3' diameter with averted vision and surrounds a brighter 1' core. At 228x a number of very faint stars are just resolved around the periphery of the halo in moments of better seeing with perhaps two dozen stars resolved in total including a bright mag 12 star (superimposed field star?). Many of the resolved stars form a semi-circular loop, ringing the halo along the entire eastern half of the globular. Several mag 10-11 stars form a long chain curving around from the SW to the east side, ~5' from the cluster. Situated within a beautiful Norma star field ~70' E of NGC 5927. 8" (7/13/91 - Southern Baja): faint, very small, 1.5' diameter, round, almost even surface brightness with a weak concentration. A mag 12 star is at the WSW edge (field star). The core appears displaced towards this star. No additional resolution was evident. Located in a rich star field with globular cluster NGC 5927 70' W. Viewed at about 14¡ elevation from Baja.