Help with M45 in PixInsight

[JCIdaho]

Hi,

I look some data on M45 - there is some light pollution, which has caused some gradients and vignetting. It's a shame, as the image has the potential to look good I feel. I am new to LRGB processing, using an asi2600mm-pro camera. I'm using PixInsight.

I've tried running ABE (automatic background extractor) loads on the sub images, but when I combine RGB, I get the corners full of light, which makes creating a subsequent mask using RangeSelection difficult. Any tips would be appreciated. I can't seem to effectively kill these gradients! Is my data just too light polluted?

 

The stacked-data for the LRGB images are here: https://drive.google.com/drive/folders/1d_W0KYxmWyDV_ONhkSR8elmxMXph-Q2B?usp=sharing.

thanks.

 

 

[JCIdaho]

Managed to solve it - ABE wasn't my friend here. DBE was 🙂