I’m starting to zero in on this, I think, so decided to do one more plate today. Prepped as before, then exposed for 26 seconds. The image didn’t start to appear for about 15-20 minutes. It’s been an hour and a half, and the image still looks a little vague, but it’s hard to tell looking through the rubylith. It’s 4:30, and the sun is starting to get pretty low in the sky. I’ll give it another hour then fix it and see what I got. Even tho I’ve burned almost 60 bucks worth of plates, this is exciting stuff! Can’t wait till next weekend.