Photo AS15-91-12343 from Keith Laney's site, resized to fit ATS.
I opened the image in GIMP
(a free image editor) and, on the "Levels" dialog, changed the white point from 255 to
25, and this is how it looks.
Now, the same photo from one of the NASA sites.
First, without any changes.
After the same processing as the first photo.
Somethings are noticeable:
First, the whole sky become lighter, unlike on the first photo.
Second, the image suffers from high JPEG compression, there are many artifacts present.
Third, the image has less colours after the processing that the first photo, because it had less contrast.
So, as you can see, this photo was altered, but the altered version is not on NASA servers, it's on a private server.
I can show you the processing of more photos, but only tomorrow.
I still have to look for the photos with the tape, but I did not forget about it, or about the photos with the stars.