Quote:
Originally Posted by renormalised
Nice shot there, Greg. Was there much oversampling at 10 mins for this camera? Might need to leave the longer subs for those nights when your seeing is top notch.
|
Its .35 arc secs/pixel at that focal length. There are different views about what a good sample is but .66 arc sec is one (3X sampling assuming around 2 arc sec seeing), 1 arc sec is what Roland Christen recommends (3 arc sec seeing which is probably pretty common).
So either nearly twice as much or nearly 3X as much as needed. Its about twice as much sampling as my Proline 16803 at 9 micron pixels does.
The issue is not the sampling though its the small wells of the camera causing some haloing on bright stars. They are only 18,000-20,000 electron wells which is even smaller than the KAF8300 which is around 25,500 and it can sometimes halo bright stars depending on your setup.
Greg.