7 x 50's or 10 x 50's

I am trying to decide between the Celestron Ultima 7 x 50 and 10 x 50 binoculars.
1. Is the 10 x too much mag for hand use? I guess the reason I want the 10 vice the 7 is that I will also use the binos for terrestrial daytime viewing.
2. How much of a factor is the exit pupil difference? Most astro viewing will be from poor skies so the 10 x would be better, but I will occasionally have access to some very dark skies.

Chris
I personally would opt for the 7 X 50. I have owned both 7 and 10 X 50's and prefer 7's to use.

I find at night it is more difficult to steady the binoculars and effectively the 7 X 50's show as much.

If mounted the 10 X 50's resolve a little more and produce a smaller exit pupil but they will also have less eye relief and a narrower actual field of view. I often lie on an old bit of carpet on the lawn to get a steadier hand held view.( No snakes here in NZ!!!!)

I am in my mid 30's and still have a decent exit pupil so use 7 X 50's by hand and a pair of 10 X 70's on a sturdy mount. When under a dark sky I feel the exit pupil really comes to the fore. If i want to get in closer still I prefer to use a telescope.

Another option might be 8 X 42's?? My partner has a pair and they are a good compromise. Just about perfect for day use as well.

Best wishes

Kevin B

Thanks for info. I'll go with the 7 x 50's.