The galaxy cluster Abell 1377 in Ursa Major.
This image is a stack of 63 sixty second exposures using a Vixen R200SS 8" f/4
Newtonian with a coma corrector.
The image was calibrated, defect corrected, stacked and gradient corrected,
then a simple linear stretch was performed, all using AIP4WIN.
This image has been resampled down from its original size of 1260x990.
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