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Ptolemaeus

Arabus et Latinus

Α Β Γ Δ Ε Ζ Η Θ Ι Κ Λ Μ Ν Ξ Ο Π Ρ Σ Τ Υ Φ Χ Ψ Ω α β γ δ ε ζ η θ ι κ λ μ ν ξ ο π ρ σ ς τ υ φ χ ψ ω
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Work B.15

Pseudo-Ptolemy
Liber proiectionis radiorum stellarum

Text ‘(ed. Venice 1484) Scientia proiectionis radiorum. Cum proiectionem radiorum stellarum scire volueris, scias gradus ascendentis et super eum 4 angulos — et si sint gradum anguli terre et gradum ascendentis fuerit, eum prime superaddes, et quod collectum fuerit erit locus radiationis equate.’

Content A short text on the projection of rays.

Origin In most manuscripts and in the three early printed editions, this text is appended to, or considered part of, the Quadripartitum in the translation of Plato of Tivoli. In MS Oxford, BL, Savile 17, the text occurs as the last chapter of Alcabitius’s Introductorius. Contrary to Lemay’s opinion (Abū Ma‘šar al-Balḫī [Albumasar]: Liber introductorii maioris ad scientiam judiciorum astrorum, Napoli, 1995-1996, IV, 56), this text is not taken from Albumasar, Introductorius maius, VII.7 (‘Differentia VII in proiectione radiorum planetarum secundum opus Tholomei’), with which it shares only the subject-matter (but not the wording) of its first paragraph.

Bibl. F. J. Carmody, Arabic Astronomical and Astrological Sciences in Latin Translation. A Critical Bibliography, Berkeley-Los Angeles, 1956, 21 (nos. 43-44).

Ed. ---

EDS

Venice, Erhardus Ratdolt, 1484, sig. [f6]r-[f6]v

MSS

Cambridge, TC, O.3.13 (1185), s. XVI, f. 120v

Cambridge, UL, Kk 1.1 (1935), s. XIII, f. 96rb-96va

Cesena, BCM, Plut. S.XXVII.3, s. XIII, f. 62va

Florence, BNC, Conv. Soppr. J.III.28 (San Marco 180), s. XIV, f. 19ra

Madrid, BN, 10015 (olim Toledo 98-17), s. XIII, f. 15rb

Madrid, BN, 10015 (olim Toledo 98-17), s. XIII, f. 18vb-19ra

Munich, BSB, Clm 3857, s. XIII, f. 43va-43vbImages

Oxford, BL, Savile 17, s. XIV, f. 94r-94v

Paris, BnF, lat. 7302, s. XV, f. 102ra-102vb

Paris, BnF, n.a.l. 693, s. XIV, f. 89r-89v

Pommersfelden, GSB, 60 (2633), s. XIII, f. 138r

Vatican, BAV, Barb. lat. 328, s. 70r-70v

Vatican, BAV, Ottob. lat. 1552, s. XV, f. 74r-74v

Vatican, BAV, Pal. lat. 1420, s. XIII, f. 34v-35r

Vatican, BAV, Reg. lat. 1285, s. XIII, f. 138rb-138va

Vatican, BAV, Vat. lat. 4087, s. XIV, f. 31r-31v

Vatican, BAV, Vat. lat. 7616, s. XIII, f. 44vb-45ra

Vienna, ÖNB, 3124, s. XV, f. 152r

Vienna, ÖNB, 5251, s. XV, f. 146v