NGC/IC Project Restoration Effort

(This is a very very beta version)

NGC2421

 

Basic Information


Location and Magnitude


Right Ascension: 7:36:12.0
Declination: -20:36:42
Constellation: PUP
Visual Magnitude: 8.3

Historic Information


Discoverer: Herschel W.
Year of discovery: 1799
Discovery aperture: 18.7

Observational


Summary description: Cl, L, cRi, st 11…13
Sub-type: I2m

Steve's Notes

===== NGC 2421 18" (3/2/08): ~80 stars mag 10-15 stars are resolved at 175x within a 10' region. Includes a large number of mag 11-12 stars. The group is well-detached in the field, particularly on the west, north and southeast sides. One concentration of stars is on the soiuthwest side. Just to the northeast, a number of the cluster's stars form the outline of a large, equilateral triangle. A rich clump of stars is the center of this triangle including a mag 11/11.5 pair at 18". At 225x, ~100 stars are visible, although the cluster spreads out too much to be pleasing at this power. 25x80mm (3/2/08): appears as a fairly large, richly glowing region with a few brighter stars resolved. 17.5" (3/7/92): about 60 mag 10-14 stars in a 10' field. Many stars are similar magnitudes and the cluster is pretty evenly distributed. Brighter stars at the borders give a triangular outline including mag 10.5 stars at the SW, SE and NE edges. A wide brighter double star (ARA 962 =10.9/11.5 at 18") oriented N-S lies NE of center and two faint companions are also near. 8" (1/1/84): almost three dozen faint stars, triangular-shape, rich field.