[ANH]

I did similar a few years back, but for Mars DEMs, also in PDS format. At first I despised it, but yes, there is a certain pragmatism to the format. And, yeah, the best way to figure out what was going on was to just look at the files themselves.

The thing that most annoyed me at the time was there wasn't a good open source JPEG2000 decoder I could use to slice up the imagery to go along with the DEMs. But that must have changed by now...