(17-10-2023, 04:10 AM)oshfdk wrote: You are not allowed to view links. Register or Login to view.(16-10-2023, 10:49 PM)R. Sale wrote: You are not allowed to view links. Register or Login to view.The 1502 edition listing references the Leipzig printers Landsberg and Kachelofen.
Opusculu[m] Iohannis de Sacrobusto spericu[m] cu[m] figuris optimis et nouis textu[m] in se sine ambiguitate declarantibus : Sacro Bosco, Joannes de, active 1230 : Free Download, Borrow, and Streaming : Internet Archive
Same cosmic pattern, slightly different printed text. Also has labels.
There is a lot of handwriting in this example, I wonder what it says.
I find the annotations hard to read, and the page was trimmed so that some letters are missing.
In this detail, the main text says:
"Unde inter illas speras, spera Saturni est maxima, spera vero Lune minima pro ut in sequenti figura continetur" (meaning: "Therefore, among these spheres, that of Saturn is the largest and that of the Moon the smallest, as the following figure shows")
The two handwritten lines between the last two printed lines read:
"[?] proprium motum suum breviorem quem currit breviorem ambitum quam alia astr[a].
Quem cursum perficit sol intra menses duodecim luna uno mense currit"
I cannot identify the initial short word and I could have misread something, but the meaning is clear:
"[the planet that] performs its cycle in the shortest time is the one that has the smallest orbit among the planets. The cycle that the sun runs in twelve months, the moon runs it in a single month".
The annotations at the right of the diagram discuss the diameter of the orbits of the planets. There is a reference to Al-Farghani (here "Alphrayan") and his work "Liber de aggregationibus scientiae stellarum".


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