happy-kat wrote:Why would you want to convert your cr2 files to tiff before using in DSS?
steve72614 wrote:Thanks for your responses. Retried everything with dcraw input and have some more questions. Hope it's not to tedious a list.
Per Ivo's advice, today I ran the CR2 files thru dcraw to produce a tiff with all the multiplier values of 1, and all the dcraw options he suggested in another post about DSS whitebalancing. The Canon Tool reports the DSS input CR2 files had a slightly red bias, and don't look to have an unnatural color cast. The images were taken at a pretty good dark site on a good night. I then ran the fts thru ST.
DSS still produced a fts with a heavy green emphasis.
I noticed that the HDR Reveal DSO Core module is what caused some of the background noise to look a little like the stars.
When sampling a star field for white, and then setting the mask to the whole image, the result was still too much green. I had to raise the green bias reduction slider to about 1.7 to get this result. Why might the sampling of a star field for white not remove the green cast?
I used a 1% read noise compensation and 7 pixel grain size in the final noise reduction step. DSS had reported a sky background of roughly 0.45% for the input images. I'm guessing that the final noise reduction noise floor could always safely be set at least as high as the DSS sky background value reported in the DSS file list. Is this the correct idea?
During the ST noise reduction step I saw what looked like a bunch of hot mostly red pixels. I'm not really clear on how to make the proper adjustment on DSS hot pixel removal. Does someone know how to adjust this DSS parameter?
The lens I used for these pictures would not quite reach infinity focus, as it was for a different brand of camera, and I used a lens adapter. I have since got another lens that achieves good infinity focus. Wondering how much of my problem with "busy background" is related to the poor focus.
Do anyone know why Deep Sky Stacker does not white balance .tiff input files?
Since binning my DSS autosave.fts image in Star Tools is necessary anyway, how does this compare to having DSS process the .CR2 to superpixels, achieving the equivalent of a 2x2 binning before feeding the result to Star Tools? I'd imagine the white balance would still be a little off?
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