Thanks Bill! I used the Tokina 16-28 f2.8. As for the workshops, I just need to update my site with the info later today (busiest week I've had in a long time). We have permits and locations lined up in Acadia, a few spots in the white mountains, and hopefully one on Cape Cod (waiting to hear back from the town board on that one). The photographer I'm doing them with taught me a lot when I first learned to shoot at night like 2 years ago now, so it was very cool when he asked me to start co-hosting with him.
We have a bit of a different style as well which will eventually change how we structure the workshops. He does amazing timelapse work and likes to mostly get everything in one frame, while I do a lot of focus stacking and exposure blending with long foreground exposures. Obviously these workshops will focus on the basics of getting the shots, but we'll also be doing some more advanced stuff in other workshops with smaller groups.