I guess not. AO7 only corrects the shift of image due to seeing. By using webcam and frame selection in registax (for example), one not only corrects the image shift but also rejects frames that suffer from high order distortion caused by seeing. AO7 doesn't correct for the high order distortion.
Furthermore, according to SBIG website, AO7 corrects the image shift at a speed up to 40 Hz. The normal guiding rate is a even smaller 10 Hz. This is lower than (or comparable to) the readout rate of webcam.
If AO7 cannot correct image shift faster than webcam + registax and if AO7 cannot correct for high order distortion, I see no reason to use AO7 with webcam.
How to find a bright guide star for AO7 when doing planetary imaging is another problem.
Cheers,
Wei-Hao
Furthermore, according to SBIG website, AO7 corrects the image shift at a speed up to 40 Hz. The normal guiding rate is a even smaller 10 Hz. This is lower than (or comparable to) the readout rate of webcam.
If AO7 cannot correct image shift faster than webcam + registax and if AO7 cannot correct for high order distortion, I see no reason to use AO7 with webcam.
How to find a bright guide star for AO7 when doing planetary imaging is another problem.
Cheers,
Wei-Hao
Wei-Hao Wang
http://www.aoc.nrao.edu/~whwang
