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Originally Posted by Asterix2020
Thanks Ivo, I do like your version. I did notice those dust donuts too, I tried to hide them  . I have more flats so I might try and redo it. I did use DCRAW to convert the .CR2 to .tiff as we have previously discussed, so I don't know where DSS is corrupting the colour data. I used median sigma kappa clipping for my stacking parameter, is this the best to use?
Camera is spectrum modified but has a UV/IR blocking filter in place. |
That's really odd, as bias seems to have been removed and light pollution is 'correctly' colored. Typically, non corrected data is a distinct green or teal colour and has a bias. It is as though the DSS settings pertaining to color calibration/alignment are not all set to 'no'.
Quote:
Originally Posted by Asterix2020
Ivo, how can I tell if the FTS file is pre-colour balanced? When I enter the colour module, the galaxy goes green with the whole image selected. Removing the green left me with the magenta the first time. I tried masking the galaxy, still green.
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I can reproduce the magenta background remnant if you keep the data at full resolution and do not counter the dark anomalies (caused by noise) by upping the Dark Anomaly filter in the Wipe module. Contrary to other software, Wipe, by default, takes your data as gospel and refuses to Wipe away anything lighter than the background, which it takes to be the darkest pixel it can find in an area (that's why ST tends to preserve faint nebulosity better). If it cannot rely on per-pixel measurements, but should instead look at averages of clumps pixels, you can tell it to do so with the Dark Anomaly filter.
The attached screenshot should be indicative of what you should be seeing in the Color module upon first launch.
Quote:
Originally Posted by Asterix2020
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The whole galaxy going green sounds like a bug
, which, if reproducible I would like to squash immediately. When the galaxy comes out green, does cancelling, binning to 50%, 'Keep'ing that and 'undo' ing the binning (e.g. now you're back where you started), then redoing the Color module give you correct colors?