Quote:
Originally Posted by RickS
How many bias and dark frames are you taking, Chris? If it is only a few then you will be adding noise when you calibrate.
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It was 20 bias and 20 darks from what I recall, maybe 10 darks.
Quote:
Originally Posted by rcheshire
The first frame looks like fixed pattern noise.
I read on the PI forum about issues importing DSS files into Pixinsight for post processing. A thread on the startools forum highlighted that versions of DSS come with their own issues.
Alternatively, run your images through the PI BatchPreprocessing script and see what results you get. IMHO, BP produces superior results.
What is the mosaic pattern of your QHY, RGGB or something else?
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I've been using PI Preprocessing elsewhere, however I'm new to it and I haven't been able to get either my helix nor my corona australis pictures to work in PI using batch pre-processing due to a lack of stars when stacking. PI throws an error.
Can't remember exactly what pattern the QHY had, but it shouldn't be relevant as all 4 pictures have the same debeyering method applied.