Latest effort was 2 hours on Cephus on the 4x5 with a 400mm lens at f5.6.
I'm pleased with the results. There are some errors and I look forward to refining the technique.
I have been trying to see the dark nebula east of IC1396 for years. It finally has started showing up for me and I'm glad.
Stuff to do:
Get better at focusing. The Lodestar is sensitive to the unfocused near IR that passes through this lens. Thus, the bahtinov mask image is not precise. I focused the 400 based on star size since that seemed to be the best indicator. I will put a UV/IR filter on the rear of the lens to see if that cleans up the signal.