I also captured an open cluster, 12x90sec, ISO 800.
NGC 6791 [open cluster in Lyr] 9.5m ø10′ [wiki] [simbad] 750mm, 800mm, 1000mm
It is not particularly interesting for visual/photographic viewing, I chose it because it is on my local zenith – and accessible in spite of the heavy light pollution. It is however a cluster that fell onto the sensor of Kepler during its first mission, and it is a very very old cluster. At 13000 light years, it is also very very far away for a visible open cluster.