PD and GIMP amusements
Getting frustrated with all this rain/cloud/wind.
One advantage of digital astronomy is that you can revisit old images. I always keep all the raw data so old stuff can be reprocessed as the fancy takes you.
I discovered this fantastic (and free!) plug-in for GIMP:
It contains a really good noise reducing routine, and also includes a whole raft of deconvolution/sharpening routines - including the popular Lucy-Richardson method.
So, I re-visited my PD data of some of my favourite DSOs, and processed them using the new plug-in (and a bit of newly learned expertise). The results are attached, together with the original ones I did for comparison.