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

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  • Thread starter kolleamm
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  • #1
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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?
 

Answers and Replies

  • #2
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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.
 
  • #3
396
35
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
 
  • #4
34,966
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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.
 
  • #5
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Okay makes sense thanks a lot for the help :D
 

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