Abell 2065, a galaxy cluster in Corona Borealis.
This cluster of 109 galaxies spans 22.4 minutes of arc and is one billion lightyears distant.
This image is a stack of 30 one minute exposures using a 5" f/6 refractor.
The image was calibrated and stacked using AIP4WIN.
This image has been resampled down from its original size of 1285x986.