re: eclipsed Full Moon in IR
"The only bright spot is Tycho, where there's less dust.
Dust absorbs the heat!"
That is interesting picture. I don't know what you mean by "Dust absorbs the heat!"
I would say bare rock holds the heat for longer period of time. And with this picture of the Moon being eclipsed the "dust" lost it's heat faster.
I would guess that the bare rock in this picture isn't very warm maybe around 100 F and regolith is near freezing [32 F]. When the Moon comes out of the shadow, the regolith should rapidly increase in temperature and in say less than hour could be hotter than than the bare rock.