Open Cluster NGC 457

Astrophotography by David Gares

Open Cluster NGC 457

NGC 457 is a very rewarding open cluster of about 200 stars in Cassiopeia. It is sometimes called the Owl Cluster because of its two bright "eyes", but nowadays folks call it the E.T. cluster (as in the "Extraterrestrial"). This is a "must-see" object yet Charles Messier seems to have missed it when he cataloged the heavens. It is especially rewarding in the 10" scope because it fits the field of view nicely.

Open Cluster NGC 457
(Click image to enlarge)

Object Details:

Type:  Open Cluster
Constellation:  Cassiopeia
Distance:  9000 light-years
Size:  30 light-years

Image Details:

Date: July 25, 2004
Site: Harahan, LA (hazy skies)
Exposure: CCD, 5 x 5 min.
Filters: Orion SkyGlow LPR
Processing: MSB Astroart 3.0
Telescope: 10" Meade LX200
Reducer: Meade f/4.3
CCD: Starlight Express MX7C
Autoguider: S.T.A.R. 2000