Not too far my previous post’s open cluster lies a smaller and younger NGC 6709.  Both were imaged on the same evening, but I only got 15 minute of integration due to advancing clouds.  However with these open clusters, I don’t think a greater number of frames would amount to much more details.

Open Cluster NGC 6709

Skywatcher 80ED
Canon Rebel XTi
30 x 30sec (ISO 400)

Image is cropped and scaled 50%.