R1 hot pixel cluster after 18 months

I've had my R1 since December of 2024. It gets very little use -- I just dabble. When I first got it I did some basic astrophotography with great results.

Tonight I decided to do some more -- and to my dismay, noticed that I now have extreme hot pixels in a cluster that were not visible before. I can actually see a white splotch in live view at just 2" and 1600 ISO.

The cluster is so bad that stacking with darks does not remove it.

Claude tells me this is 727 pixels pegged at the sensor's max in that one spot.

I'm attaching a hard-stretch so you can see what I mean.

I'm guessing I am entirely on the hook for this as an out of warranty repair. Anyone have any insight, suggestions, or condolences?


R1_bodycap_2s_final.jpg
 
Here are three raw images. The first is a lens-capped calibration dark I took 17 months ago. The sensor was cooler because it was an outdoor winter shoot.

 
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