I see these images almost every day. What are they? Is that the sun and are they recording or sampling atmospheric conditions? In the past they were preceded by four images of star fields (if you download and zoom in.) What are those? (Image in comments). Are they related? Credit: NASA/JPL
Which sols are the images you highlighted in the image in your comment?
It is possible that the rover returned metadata to show the pointing and the precise UTC timing of the capture by the camera when those 4 images were acquired. Such data can be used by experts to understand what star field camera was looking at, but that's a skill I have not acquired. The actual reason for the images will likely be detailed in the mission managers report for that sol, but if they are recent images, then you'll have to wait several months before that information hits the PDS / Analysts Notebook