Cernan's sketches of glows a few minutes before sunrise, while in moon orbit
So, in the terminator area, the dust can go very very high!!
(Somehow, can't it be the zodiacal light instead ?)
I can't find on the web the picture page 48 of march 2006 Astronomy magazine representing the twilight glow seen from Surveyor 6..There's also a picture from Surveyor 1, 5 and 7.