Thanks Rolf, you got a headstart on me, Crux isn't above my house for another hour!

I look forward to seeing it!
Here's set 2 and a combination stack of sets 1 and 2.
Longer star trails=more comet detail but layered over more overlapping stars= almost no gain.
All sets: DSI II cooled to 7.7C / Dew point 11C / ambient 15C
This represents 1 hour 4 mins of movement.
12" F/5 Newt / Homemade GEM.
Steve