Thanks JKP! The manuscript is earlier, so it or a similar one probably served as the model for that astrolabe.
I still wonder what the stringy shapes refer to in the original.
It has crossed my mind that Ptolemaic astronomy and trigonometry uses "You are not allowed to view links. Register or Login to view." for calculating the position of stars. Could it be that the strings in this MS and in the Voynich are a distorted reference to this, turning chords into strings?
ETA: I'm aware that ptolemaic chords are straight, not wavy, but I'm trying to find some train of thought that may have led to the Voynich "stars on strings" motif.
I still wonder what the stringy shapes refer to in the original.
It has crossed my mind that Ptolemaic astronomy and trigonometry uses "You are not allowed to view links. Register or Login to view." for calculating the position of stars. Could it be that the strings in this MS and in the Voynich are a distorted reference to this, turning chords into strings?
ETA: I'm aware that ptolemaic chords are straight, not wavy, but I'm trying to find some train of thought that may have led to the Voynich "stars on strings" motif.