M98 with SN 2024 exw

When I processed this image I noticed a conspicuous green object near PGC39002 and thought it was a camera artifact. But then began to wonder if it was real and found it in another Astrobin image (https://www.astrobin.com/b05iz1/B/). It was identified as SN2024exw (https://www.rochesterastronomy.org/sn2024/sn2024exw.html). I would not have noticed the SN if it had not been for the green color!  I think I know what happened.  The green color is an artifact of statistical noise rejection during stacking in Pixinsight.  The problem arose because I was mixing images from March (no SN) and May (SN).  For blue and red, there were more frames from March.  Thus, the system rejected the SN pixels, which can be seen in the red and blue masters.  But for the green data, I had more images from May where the SN was present, there was no rejection, and the object showed up green in the RGB.