Hi I am trying to use the pre-processing script to stack some images but got the following PixInsight error message "Zero or insignificant signal detected (empty image?)" at the image Integration stage. I can definitely see the image. Please can I request help.
The following PixInsight ERROR were also appearing for each of the individual light subs
C:/Users/sharandi/Pictures/Astronomy/NGC/NGC6960 - 2019-10-08 - ISO-800 120Secs Skywatcher 200PDS - 600D - L-eNhance Filter - West Veil Nebula/registered/IMG_6880_c_d_r.xisf
Loading image: w=5202 h=3465 n=3 RGB Float32
Computing image statistics: done
58 FITS keyword(s) extracted.
58 FITS keyword(s) extracted.
MRS noise evaluation:
** Warning: No convergence in MRS noise evaluation routine - using K-sigma noise estimate.
** Warning: No convergence in MRS noise evaluation routine - using K-sigma noise estimate.
** Warning: No convergence in MRS noise evaluation routine - using K-sigma noise estimate.
I am using a Canon 600D which I have successfully stacked before. There were 28 Images of 120 Seconds @ ISO-800 and in the Canon RAW .CR2 format. The only differences are that (a) This is the first time I am using an Optolong L-eNhance filter and (b) The flats I took were failing to integrate so I only used DARKS.
I can attach sample of the images
UPDATE: I used Deep Sky Stacker and it happily stacked the same frames. I also use the PI SubFrameSelector and it returns FWHM scores of around the 3 mark which from the documentation should be fine. So not sure why PI is erroring!?
