I have 10 weeks that I'll be away doing a research internship starting at the beginning of June. It's going to be weird to be away from the wife and kids that long. We're hoping to have a week for whatever after that. No plans yet, but I'm sure they'll materialize before the date.
10 weeks is a long time to be away these days. I know a ship's captain that travels like those times quite regularly, and he said it is pretty challenging, as his wife is essentially a single mother 50% of the time.
But, it sounds like the opportunity is worth it.