NGC/IC Objects

NGC 654: Open Star Cluster (Cassiopeia) RA: 01h 44.0m / DEC: +61° 53'.0
Instrument: 10-inch Starfinder

NGC 654 is conveniently located near a pair of stars in Cassiopeia's W-asterism. 2.7 magnitude Ruchbah (Delta) lies about 3 degrees to the southwest and 3.4 magnitude Segin (Epsilon) lies 2 degrees to the north-northeast. The sketch at left captures NGC 654 as viewed in the 10-inch Newtonian at 129X. The 6.5 magnitude cluster is centered with 7.3 magnitude HD 10494 standing at the southeast edge. A semicircular arrangement of three 11th and 12th magnitude GSC stars partially wraps this bright star. Seven additional cluster members share a 5' diameter area. Averted vision reveals numerous fainter stars. Eighteen field stars frame NGC 654, with the brightest of these being a 9th magnitude GSC star stationed about 13' southeast of the cluster. While you're in the area, don't miss NGC 663, which is just 42' to the southeast.

NGC 637 NGC 659


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Revised: March 17, 2002 [WDF]