ZWO ASI533MC Pro debayering issue

vesko

M16 from Bortle Class 5

TeleVue85 + TeleVue 0.8 reducer/flattener + ZWO ASI533

Guiding: PHD2 + ZWO ASI120MC-S

Software: AstroImager on MacBook Pro (Gain 100, Offset 70)

Images acquired as fits.

Debayering in PixInsight using RGGB pattern and VNG method

Autostretched with the STF function in PixInsight

All the images appear very different. After star aligning them and image integrating them in PixInsight the resulting image is unusable.

I tried to debayer them with the demo version of Nebulosity4 and the results are very similar.

As I've been imaging with DSLR up until now, debayering is new to me.

Please refer to the attached images.

vesko

Some more images

vesko

Potential issue identified. AstroImager for Mac was recording by default 8-bit Raw files. Will switch to 16-bit files and see how it goes.

wvreeven

Also, make sure that the white balance for the red and blue channels are set to 50 and not to the default settings of 52 and 95 respectively. I never understood why ZWO chose those values...

horst ziegler

Hi,

I had the same problem of debayring ASI533 with PI. The nebulas were green instead of red. With MaxIm it was ok. Then i found out, that the flag ‚up-bottom‘ was not set and the image was turned and mirrored. Obviously the interpretation of the bayer matrix was wrong because of this. After a new process with the flag on, the result was perfect.

Horst