Two paths taken given different results..why?

[JoeM]

I'm very new to Pixinsight  and want to get off on the right foot...

I followed two different paths that I though would give the same result for creating a bias master: Path 'A') convert CR2 files to FIT format using the BatchImageConversion script then follow the suggested image integration settings. Path 'B') load the CR2 files directly into the ImageIntegration Process ( Documentation says this does not work...but it does, though much slower). Both paths give me a FIT file result but they appear to be different (please see attached). Path B shows a pattern of vertical lines while path A seems random.

Which is best? Why are they different?
Thanks!

[diurnal]

one's a grayscale and another is an RGB image.  make sure CFA is checked in 'batchpreprocessing'. i think there is an option in just doing 'imageintegration'.

if not you can use the 'debayer process' to make it into RGB image.

mick

[papaf]

If all you're doing is what you wrote, I'm not sure any of the two are right.
You're integrating raw files without aligning first, so the result is always going to be bad. Plus, if you feed the CR2 files to ImageIntegration, you'll stack bayer coded files, which will give funky results.
The correct path is either use BatchPreprocessing from the CR2s or after you've converted them to fits, or do it all manually by using a lot of tools, which I don't recommend.

[Phil Leigh]

To create a Master Bias from a large number of RAW (CR2) files:

1) Set RAW format preferences correctly in Format Explorer; deselect any white balance option; select "create RAW debayer image" and "no black point correction"

2) use the batch conversion script to convert to FIT (this will speed up the next step and can prevent out-of-memory errors)

3) In Image Integration deactivate Normalisation and Weighting algorithms in the Image Integration and Pixel Rejection sections; In Pixel Rejection Section 1 select Winsorized Sigma Clipping, In Pixel Rejection Sectio 2 set Sigma Low to 4 and Sigma High to 3

[JoeM]

Thank you all for the quick replies -- I got a lot to learn!