Pegasus I Cluster

Posted by dcrowson
on Sunday, August 22, 2021
The Pegasus I Galaxy Cluster occupies around 6.3 degrees of sky approximately 160 million light-years away. This 1.71 x 1.29 degree image is centered on NGC 7619 (center) and NGC 7626 (just left of center). See the annotated version to see the designations for many more galaxies. A paper can be found here - With the brighter members visible through a smaller telescope, this one is part of the Astronomical League’s Galaxy Groups and Clusters Program -

Luminance – 25x600s – 250 minutes – binned 1x1
RGB – 13x300s – 65 minutes each – binned 2x2

445 minutes total exposure – 7 hours 25 minutes

Imaged from Dardenne Prairie, Missouri (a red zone) on November 5th, 6th and 7th, 2020 with a SBIG ST-8300M on an Astro-Tech AT90DT at f/6.7 603mm.

LRGB annotated -

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