Correcting lens aberrations
Posted: Thu Sep 08, 2016 1:50 pm
Hi all,
New user here. Just paid for the full version after ST did such an excellent job on some Widefield DSLR images (using the Canon kit lens) I had taken during my recent holiday to Spain.
Now this question is due to another dataset I took during the holiday. These were 30x30s lights I took of M31 using my Tamron zoom lens at 200mm. Although they are (I think anyway) reasonably in focus, I kept the aperture at the most open setting and this seems to have caused some rather nasty aberrations of the stars surrounding M31 (I think they are astigmatism lens aberrations, anyway the stars have turned into bloated triangles). I have processed the dataset twice in DSS and I just seem to end up with a background that overcomes the detail that I seem to have in M31, i'm guessing because DSS cannot find these stars due to the aberrations.
Would it be better to convert these 30 frames into TIFFs/FITS and then clean them up with the Repair module in ST before stacking them in DSS?
New user here. Just paid for the full version after ST did such an excellent job on some Widefield DSLR images (using the Canon kit lens) I had taken during my recent holiday to Spain.
Now this question is due to another dataset I took during the holiday. These were 30x30s lights I took of M31 using my Tamron zoom lens at 200mm. Although they are (I think anyway) reasonably in focus, I kept the aperture at the most open setting and this seems to have caused some rather nasty aberrations of the stars surrounding M31 (I think they are astigmatism lens aberrations, anyway the stars have turned into bloated triangles). I have processed the dataset twice in DSS and I just seem to end up with a background that overcomes the detail that I seem to have in M31, i'm guessing because DSS cannot find these stars due to the aberrations.
Would it be better to convert these 30 frames into TIFFs/FITS and then clean them up with the Repair module in ST before stacking them in DSS?