From album Deep Sky Observations
NGC 6166 is part of the Abell 2199 Galaxy Cluster, found in the constellation oh Hercules. NGC 6166 is the largest and brightest of the galaxies in this image. The galaxies in this cluster are estimated to be in the region of 400 Million Light Years distant.
This image contains only Luminance data and consists of 15 x 4 minute exposures which were then stacked.
10in Meade LX200 'Classic', F3.3 Focal Reducer and Meade DSI II Pro camera.