Hi Jack
I edited your post to fix the link for the APOD page. The point at the end was causing problems.
You got an excelent image. 14 sounds a lot, but it is a f/11 telescope, right? I cannot imagine how difficult is to use it
Congratulations.
Now, just to make a little critict. You may use the star's mask to perform a "star shaping" routine. Just apply a soft minimum filter (10%, 3x3 kernel, 7 iterations). You may adjust the mask to just affect the largest stars, wich looks a bit bloated, by using wavelets and histogram changes.
Keep the good job comming!
Thanks for sharing.