What can I expect to see with a 6inch mirror?

• B
I purchased a 6 inch mirror reflector telescope with GPS tracking, and hoping to do some astrophotography.

I previously had a 3in lens refractor. Will the resolution be twice as good?

Related Astronomy and Astrophysics News on Phys.org
mfb
Mentor
Seeing will become (more) relevant, depending on atmospheric conditions. You collect four times the light, but resolution does not have to go up by a factor 2.

Seeing will become (more) relevant, depending on atmospheric conditions. You collect four times the light, but resolution does not have to go up by a factor 2.
So if it would be 4x the light gathering then the resolution would be 4x right? Assuming conditions/distances of planets are the same.

Thanks

mfb
Mentor
So if it would be 4x the light gathering then the resolution would be 4x right?
No, a factor 2 in resolution (in both axes) at the same light per pixel already needs a factor 4 more light. Without the atmosphere, you could get the same image quality with a 2 times better resolution (4 times the number of pixels). With the atmosphere, you probably won't reach that theoretical improvement.

Okay makes sense thanks a lot for the help :D