Rick -

How dark is your sky, I ask because your exposure time seems to
indicate dark sky's and the ClearSkyChart for Mantrap Lake doesn't
have a light pollution map.

I would love to live in a dark sky area but the boss (my wife) has
veto power on those type decisions.

Below is an out of date LP map for my location. There has been
significant development to the west in the last few years, greatly
adding to the LP. I pretty much limit my imaging to northeast
quadrant and even then I'm fighting significant gradients.

Attached Thumbnails