The plate solver web site gives you a bunch of information about your image like field of view. I wanted to get the info for the Nikon so I went back and picked an image that was done at wide angle and fed it in. Lo and behold, there was Hercules front and center. This is exactly the starting point I was looking for to trail my way up to it. The image is not much good because it was done at reduced resolution and i had to boost brightness and contrast all to heck to get it recognized. Still, it’s an excellent start.
At the left bottom is the handle of the dipper and top middle is Hercules.
This was shot with the Nikon at its widest setting-24mm equivalent, ISO 6400, f/2.8, 1/2 sec. The resolution is one quarter of maximum at 2272X1704. I boosted it to +35 brightness, +100 contrast with Paint Shop Pro.
The plate solver output is shown below: