I took advantage of the recent Moonie nights to collect some Ha data on M17.
This comprises 3.5 hours data in 10 minute subs. Taken from the iTelescope facility at Coona with PW CDK12.5 with STX16803.
I can't tell you the bandpass of the Ha filter - its a long drive to check out the specs in the filter case!
Minimal processing in PI - a touch of DBE, stretch and histogram adjustment, some Atrous wavelets to tighten it up a bit and Local Histogram Equalisation to emphasise the cloudiness in the lower sections of the nebula. I resisted the temptation to try deconvolution.
Here is a link to a higher res image
http://www.pbase.com/equitius/image/156997868/original
Comments most welcome
Pete