|NGC 457: Open Star Cluster (Cassiopeia) RA: 01h 19.5m / DEC: +58° 17'.5|
Instrument: 10-inch Starfinder
Cassiopeia is queen of the night sky. It is, therefore, appropriate that she be adorned with host of celestial gems, many of which are strings of star dust we call open clusters. NGC 457 is on her highness's nightstand within arm's reach of 2.7 magnitude Ruchbah, Delta (37) Cassiopeiae, which lies about 2 degrees to the northeast. The sketch at left presents a 129X view in my 10-inch Newtonian. NGC 457 is nearly centered in the field, a tangle of bright and faint stars against an obsidian sky. 5.0 magnitude Phi Cassiopeiae is the brightest member is this 13' diameter grouping and marks the southeast border. 7.0 magnitude HD 7902 shines 2' to the southwest. A 10th magnitude GSC star hovers 43" due west. Another bright star, 8.7 magnitude HD 236697, can be seen about 5' north of Phi Cass. An additional 35 cluster members, 10th through 13th magnitude, dot the landscape. These are framed by 27 field stars.
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Revised: January 18, 2003 [WDF]