Thanks! I had not noticed that TeleVue had updated their Questar finder focus compatibility table. They added a couple of Delos and a bunch of DeLite eyepieces. It's good to get confirmation on the DeLites. I've added these to the table at my site.
When I originally put this together I was not able to test every eyepiece myself. I found some discrepancies between reports from others and my own experience. I finally realized there there are two obvious explanations for these:
1. Vision correction. It's easy to adjust telescope focus to correct for simple near and far sightedness. The finder focus has a much smaller range. Results can vary depending on the vision of the user and whether or not they use corrective glasses with the eyepiece.
2. Questar has made more than one version of its diopter adapter. TeleVue also makes a diopter adapter that allows the use of standard 1 1/4" eyepieces. I expect that there is variability in finder focus depending on the model of diopter adapter used.
None of the sources I found, documented either of these possible causes of variation in reports of finder focus compatibility for the Questar. As a result, YMMV (boy am I old?). Take any report of compatibility with a grain of salt until you can verity it with your own eyes and equipment.
I'm happy to add new information. I like to the original sources I used so that anyone can check for updates. Please let me know of any changes or corrections and I'll update the table. Here is my updated compilation: