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PD and GIMP amusements

Roger Samworth

7/12/2015

 

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:

http://gmic.eu/

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.

Roger

Object                                                           Image re-processed using new plug-in for GIMP                                                                                                            Original image

M42

M42new Samworth121115 071215

M45

M45new 081015 pleiades 071215

M82

M82new Samworth160715 071215

M97

M97new Samworth220315 owl 071215

M104

M104new Samworth130415 sombrero 071215

NGC2239

NGC2239new Samworth121115 rosette 071215
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M42old Samworth121115 071215
M45old 081015 pleiades 071215
M82old Samworth160715 071215
M97old Samworth220315 owl 071215
M104old Samworth130415 sombrero 071215
NGC2239old Samworth121115 rosette 071215