NGC 457: The "ET" Cluster

NGC 457 is an open cluster located in the constellation Cassieopeia. It is easily found in small telescopes, and a favorite for amateur astronomers who can imagine the nicknames of Owl Cluster and ET. The two bright stars in the upper left make up the eyes of ET.

This image was taken as part of Advanced Observing Program (AOP) program at Kitt Peak Visitor Center during 2014.

Credit:

KPNO/NOIRLab/NSF/AURA/Ken and Emilie Siarkiewicz/Adam Block

About the Image

Id:noao-n457siark
Type:Observation
Release date:June 25, 2014, 12:36 p.m.
Size:1441 x 972 px

About the Object

Name:NGC 457
Constellation:Cassiopeia
Category:Star Clusters

Image Formats

Large JPEGLarge JPEG
386.2 KB
Screensize JPEGScreensize JPEG
196.0 KB

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Coordinates

ObjectValue
Position (RA):1 19 20.92
Position (Dec):58° 15' 16.24"
Field of view:17.86 x 12.03 arcminutes
Orientation:North is 78.8° right of vertical


Colors & filters

BandWave-lengthTele-scope
Optical
B
438 nmVisitor Center 0.5-meter Telescope
Other CCD
Optical
G
475 nmVisitor Center 0.5-meter Telescope
Other CCD
Optical
R
625 nmVisitor Center 0.5-meter Telescope
Other CCD
Optical
Broad Band
555 nmVisitor Center 0.5-meter Telescope
Other CCD