My 6 inch Dobsonian vs my friend's 10 inch - the light gathering difference is insane
I took my 6 inch Dobsonian out to a dark sky site last Saturday and my buddy brought his 10 inch. We both looked at M31 and I could see the core and a hint of dust lanes, but his view? Full spiral structure, like a photo in the eyepiece. The difference in light gathering (2.8x more area, right?) was way more dramatic than I expected. Do you think aperture really makes that much of a jump, or am I just bad at observing? I'm considering saving up for an upgrade now, but I don't want to haul around something huge if the gain isn't worth it. Has anyone else compared side by side and felt like their scope was suddenly useless?