Pegasus I Galaxy Cluster (Roll over image for galaxy labels)   HOME INDEX BACK NEXT

Galaxy Cluster in Pegasus

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Galaxy clusters such as Pegasus I are among the most distant objects that can be observed through ordinary amateur telescopes. Even fairly small telescopes can show the two brightest members of this cluster, the elliptical galaxies NGC 7619 and NGC 7626. With larger telescopes, some of the dimmer galaxies can be seen. However, some of the smallest and dimmest galaxies visible in this image (listed in the Principal Galaxy Catalog, and labeled with "P" in this image) are a challenge to see in the largest amateur telescopes.

NGC 7619:

Magnitude 12.3
Apparent Size 2.5' x 2.3'
Distance (light yrs) 170 million
Right Ascension 23:20.2
Declination +8 12
Field of View 34' x 26'

NGC 7626:

Magnitude 12.3
Apparent Size 2.6' x 2.3'
Distance (light yrs) 170 million
Right Ascension 23:20.7
Declination +8 13

Image details:  Exposure times of 60 minutes luminance and 30 minutes each of red, green and blue, taken with an SBIG ST-8300M imager and a 12" Meade telescope at f/7.

October 2011