Yes, Live-view is bright enough to spoil it. A red headlamp is ideal but with a wide lens, it's easy to have red light stray into your picture. Use live-view for setup and initial shots and then turn off anything that uses the LCD once you've started.
Lesson from last night - Don't forget to plug the dewstrap in. D'oh !
The eyepatch thing is true. I have one eye that is dominant so I find it hard to do. Some people use them at total eclipses to get the best view in totality. Useless factoid - Using the eyepatch to keep one eye dark adapted is the origin of the stereotype pirate having an eyepatch.
Thanks again. Cool bit of trivia about the eye patch. And I though I was getting enough police attention just shooting around the city at dusk. Now I will have a balaclava (it has been around freezing and very humid while I have been shooting), a mask on the back of my head (a feeble attempt at preventing a cougar attack while hiking alone at night), and an eye patch.
This should help
Very helpfull, thank you. I framed my picture under the assumption that the star at the end of the handle of the big dipper was the north star.

