NASA’s Perseverance rover captured this view of Deimos, the smaller of Mars’ two moons, shining in the sky at 4:27 a.m. local time on March 1, 2025, the 1433rd Martian day, or sol, of the mission. In the dark before dawn, the rover’s left navigation camera used its maximum long-exposure time of 3.28 seconds for each of 16 individual shots, all of which were combined onboard the camera into a single image that was later sent to Earth. In total, the image represents an exposure time of about 52 seconds. The sun was about 13° below the horizon when this image was captured.
The raw image was corrected for bias using an exposure taken earlier in that night. Remaining line noise was corrected using a custom filter and hot pixels (likely from radiation hits) were removed.
The image was then debayered, denoised and color processed to approximate what the human eye would have seen if it was sensitive enough.
Finally, this version was also corrected for lens distortion and leveled for the horizon.
This is a reprocessing of this image using higher quality Planetary Data System data.
Credit: NASA/JPL-Caltech/Simeon Schmauß
You needn’t be concerned. Deimos isn’t going to activate your latent lycanthropy.
It’s Phobos you need to worry about.