How about this?
http://www.opticsinfobase.org/ao/abstract.cfm?uri=ao-47-34-H39
I would gladly provide the full text of the article if I knew how to upload PDFs to this site, as I have access to several peer-reviewed journals through my university.
I am unfortunately on a slow connection at the moment which makes downloading even moderately large files impractical; if you could post a single image I will look into the matter further when I get the opportunity.
However, I should point out that if all this document shows is curvature, then it's not what I asked for. I asked for a discontinuity.
Have a little patience, you asked for a very specific document, and my search is still underway. Research takes time, and I have a few other obligations in my life. I will post the images you asked for just as soon as I find them.
I posted that article merely to make sure we were all on the same page in that curvature could be measured from high altitudes.
EDIT: The panorama from the OP was taken by Roderick Mackenzie, and is the only known panoramic image from the top of Mount Everest, I am endeavoring now to find the original photographs from which that image was compiled.
EDIT2: This is a still version of the panorama, as you can see, the horizon appears to have some sort of "wave" effect a result of stitching together different photographs. There appear to be 4 distinct "humps", meaning the final image was probably produced from 4 separate images.