{ "viewingDirection": "left-to-right", "metadata": [ { "label": "Uniform Title", "value": "Magna constructio [Almagest]" }, { "label": "Origin Place", "value": "Basel" }, { "label": "Physical Location", "value": "Whipple Library" }, { "label": "Extent", "value": "Leaf height: 300 mm, width: 300 mm." }, { "label": "Funding", "value": "" }, { "label": "Abstract", "value": "
This diagram comes from the first Greek edition of Ptolemy's Almagest <\/i>(c. 150 A.D.), which was published in 1538 along with Theon of Alexandria's commentary on the work. Regiomontanus had previously promised a translation in his 1474 advertisement leaflet of his intended publications, but he could not carry out the project. Nonetheless, the Greek manuscripts that he owned were the basis for the editions by Simon Grynaeus and Joachim Camerarius the Elder. Grynaeus's dedicatory letter to Henry VIII, King of England, precedes the Almagest<\/i>. The woodcut entitled 'Declination of horizons' shows the diagram for computing the angles of inclination of an eclipsed body to the ecliptic and of the ecliptic to the horizon. The diagram is drawn not as a table, but as a series of concentric circles, one for each latitude, for places like Meroe, Rhodes and Borysthenes.<\/p>" }, { "label": "Date of Creation", "value": "1538" }, { "label": "Title", "value": "Figure for computing the angles of inclination of an eclipsed body" }, { "label": "Material", "value": "paper" }, { "label": "Classmark", "value": "Whipple STORE 43:3" }, { "label": "Note(s)", "value": "
Links to other items:<\/p>
Eclipses - methods of calculation: Whipple STORE 43:13 (Eclipses)<\/a><\/p> Eclipses - methods of calculation: Whipple STORE 43:13 (Table for calculating eclipses)<\/a><\/p> Eclipses - methods of calculation: Wren S.4.18 (Table of eclipses)<\/a><\/p> Eclipses - methods of calculation: Wren S.4.18 (Table of the equation of days)<\/a><\/p> Eclipses: Perne S.9 (Representation of the lunar eclipse of Gaugamela)<\/a><\/p> Eclipses: CUL Te.52.111 (Eclipses)<\/a><\/p> Eclipses: CUL Adams.3.56.1 (Measuring eclipses)<\/a><\/p> Eclipses: CUL M.9.49(1) (Lunar eclipse)<\/a><\/p> Eclipses: CUL Norton.c.32 (Explanation of eclipses)<\/a><\/p> Eclipses: Whipple STORE 55:13 (Eclipse of the Moon)<\/a><\/p> Eclipses: CUL M.5.49 (List of eclipses with diagrams)<\/a><\/p> Further image from this work: Whipple STORE 43:3 (Triquetum)<\/a><\/p> Eclipses: CUL Adams.3.56.1 (Measuring the apparent diameters of the Sun and the Moon using eclipses)<\/a><\/p> Eclipses: CUL Norton.c.32 (Relative dimensions of the Sun and the Moon; phases of the Moon)<\/a><\/p> Eclipses: CUL Syn.6.51.5 (Relative dimensions of the Sun and the Moon; phases of the Moon)<\/a><\/p> Eclipses: Whipple STORE 55:2 (Proof that solar eclipses differ according to the relative distance of the Sun, Moon and Earth)<\/a><\/p> Eclipses: CUL Adams.3.56.1 (Method of observing a solar eclipse (camera obscura))<\/a><\/p> Eclipses: CUL Inc.5.B.3.23c[1460] (Lunar and solar eclipses)<\/a><\/p>