Hi Holger,

I have been reviewing Neugebauer and Parker, Egyptian Astronomical Texts, vol III. Decans, planets, Constellations and Zodiacs PLATES for my own purposes and came across plates 46 through plate 50. These plates contain a similar streams of triangles pointing towards the sun. I have not read the accompanying text so make no comment on the symbology. The accompanying text is in a seperate volume which I do not yet have access to. These plates may give you some materials to follow-up.

Regards,
Brendan