Dana,I observed NGC 6717 last night and was surprised at how easy it was.
Under High mag was able to resolve quite a few of the field stars around it.
16" F 4.5 Dob,6mm Radian, 300xmag.
When first observed with the 17mm type 4 nagler 107xmag it was so sharp and with no interference from Mag 4 star Nu Sagittarii.
It is a nice sight in a wide field eyepiece,and a beautiful part of the Milky Way.
I enjoy your posts and challenges.

Cheers