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

[kolleamm]

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?

 

[mfb]

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.

 

[kolleamm]

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]

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.

 

[kolleamm]

Okay makes sense thanks a lot for the help :D