Hi,
Well I am 80% red/green colourblind, the most common type (although that has sub-types as well).
It stopped me considering several careers when young, but has not had any serious effect apart from that, just minor aggravations.
I was glad to know I could not pass this hereditary condition to my sons, since it is only transmitted by the mother (however females are less likely to be colourblind).
I doubt that I could ever achieve great success in astro-photography since it seems to emphasise colour balance and image correction. I could be wrong though, that did happen once years ago
. I might try it yet.
Cheers