I have Cartes Du Ciel on my laptop, however, it is being REALLY finicky, so i do not want to take it with me. It has been a while since I have been out observing, but this weekend, I plan on dusting off my binoculars and cleaning/tuning up a 4" newtonian.

So that said, I am wondering, what is the number one sky atlas that is the must have book? to take to the field?

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Eagle Eye Observatory