NGC 457
DSS image of NGC 457
Overlaid DSS image of NGC 457, 30' x 30' with north at top and west to the right

Aladin viewer for the region around NGC 457
Owl Cluster, Dragonfly Cluster, Phi Cas Cluster, ET Cluster
H VII 42, h 97, GC 256, Melotte 7, Mel 7, Collinder 12, Cr 12, Lund 43, C 0115+580, OCl 321, OCl 321.0

Type  Open Cluster
Magnitude  6.4
Size  13'
Right Ascension  1h 19'  (2000)
Declination  58° 17' N
Constellation  Cassiopeia
Description  Cl, B, L, pRi, *7, 8, 10
Classification  I 3 r
Observing Notes

Andrew Cooper
Jun 27, 2020    Waikoloa Quarry, HI (map)
8x42mm Nikon Prostaff 3S Binoculars @ 8x
Seeing: 7 Transparency: 7 Moon: 0%

A notable cluster extending northwest of the 5th magnitude φCas, 10' in extent, a scattering of fine 9-10th magnitude stars, rich, resolved

Andrew Cooper
Nov 2, 2019    Kaʻohe, Mauna Kea, HI (map)
28cm f/10 SCT, NexStar 11" GyPSy @ 127x
Seeing: 7 Transparency: 6 Moon: 39%

A bright cluster, large, coarse, fully resolved, two much brighter stars on the southeastern margin, φCas at mag 5.0 and HD7902 mag 7.0, with a scattering of 9-12 magnitude stars over a 15' area, arranged in notable clumps

Andrew Cooper
Aug 19, 2017    Oregon Star Party, OR (map)
14.5" f/4.5 Starmaster @ 61x
Seeing: 7 Transparency: 7 Moon: 0%

Large, bright, coarse, a very conspicuous cluster in a rich starfield, two bright stars on the south margin, φCas at 5.0mag and a 7th mag

Andrew Cooper
Dec 27, 2002    Sentinel, AZ (map)
46cm f/4.5 Deep Violet

Bright!! rich, not concentrated, a hundred stars or so with a very bright star on the south edge of the cluster, somewhat clumpy with a heavier band north-south in the center

Rev. T.W. Webb
May 19, 1885    Hardwick, Herefordshire, England (map)

A very elegant group attending φ, 5 mg. The second star lilac. Red star, 30' n, a little f φ.
― Celestial Objects for Common Telescopes, T. W. Webb, 1917
Other Data Sources for NGC 457
Associated objects for NGC 457
Nearby objects for NGC 457

Drawings, descriptions, and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.

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NGC 457