NGC457 Open Star Cluster in Cassiopeia
(RA 1h 19.1m , Dec. +58°20', 6.4 mag., 13 arcmin. in diameter)
NGC457 is a spectacular open cluster 2° SSW of d Cassiopeiae (see finder chart below). Wide double (blue-yellow) star f Cassiopeiae, while probably not a member, is visible on the SE edge of the cluster.
The above image was taken on December 29, 2000 from Harrowsmith, Ontario. Variable high level ice fog caused light scatter which highlighted color of the brightest stars in this beautiful cluster. Cookbook 245 LDC camera was used on Celestron Ultima 8 SCT with f3.0 focal reducer. White exposures (21 x 30 sec.) were combined with cyan, magenta and yellow-filtered images (5 x 30 sec. each) using AIP4WIN software and the image was furter adjusted in Lab color space with Corel PhotoPaint 8.
North is to the right of the image.
Map created in Guide 7.0 - 7°45' x 7°45'. North is up.
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© Jan Wisniewski