Glad to see this getting exposure on HN. I gave a PyCon keynote [1] last year about how this was done. I've also put the image online in my own viewer [2], which has a few additional features: it encodes the viewing location in the URL and it allows for multi-pane synchronized views [3]. (Please be nice to my server.) I'm happy to answer questions here or on Twitter (@erdmann).
We have collected data in several imaging modalities: RIS-VNIR (reflectance imaging spectroscopy, visible and near infrared (380 nm – 950 nm) in 3 nm bands), RIS-SWIR (same, but from 900 nm – 2500 nm), UV-induced visible fluorescence, MA-XRF (macro x-ray fluorescence, which lets us make elemental maps for elements heavier than Al), structured light scanning to capture 3D to about 15 µm resolution, x-radiograph, and others. I'll release them in due time...
[1] https://www.youtube.com/watch?v=z_hm5oX7ZlE
[2] https://hyper-resolution.org/Nightwatch5
[3] https://hyper-resolution.org/view.html?mode=trumpet&pointer=...