Changed up a few things - I found a new box, though it's somewhat shallower than I like.  I managed to get a half-decent picture of the Moon via my telescope and my tablet.  Fiddly, but doable.

Font: David Libre (SIL Open Font License)

Edited to add: Epub preview (chapters 1-3) is now up, via google drive:
drive.google.com/open?id=1lpTQ…

Please have a look and comment on the formatting.  It's 90% automated, and some readers don't seem to respect the request to center certain things (titles, dedication page).  Not sure if I can fix that, would welcome any tips.