Questions to ask here

done

1/64th works out into 68 meters and higher at higher latitudes S. Pole map is at 25 meter resolution

SpheremapB - DTEM and shaded relief -- raw and pgm, 16bit unsigned short (which is in the header) -- takes bigmaps and makes a large map (either orthograthic, stereo, equrect)

mGrav - makes elevation map relative to gravity