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Ptolemy's Catalogue of Stars. A Revision Of The Almagest

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The following work embraces the results of the whole of the long and laborious researches of the late Dr. Christian Hcinrich Friedrich Peters on the Catalogue of Stars in Ptolemy's Almagest. Some account of this investigation, which he began about the year 1876, will be found in the opening pages.

The Catalogue of Stars contained in the seventh and eighth books of Ptolemy's commonly called The Almagest, must always be considered of unique interest. It is the first and most ancient document we possess which gives a description of the heavens of sufficient exactness to admit of comparison with modern observations. For many centuries it was held in the highest repute, and indeed, until the time of Tycho Brahe it was practically the only source of information of the positions of the stars which the world possessed; for though in the fifteenth century Ulugh Beg prepared a much more accurate catalogue of Ptolemy's stars, it never came into general use.

Ptolemy's catalogue has accordingly been the subject of many researches and investigations. Up to the present time six editions of the catalogue have been printed in Greek, viz.: Grynaeus, Halley, Montignot, Halma, Baily, and Helberg; also several editions in Latin, particularly those of Trapezuntius, Schreckenfuchs, and Flamsteed, translated from the Greek; those of Liechtenstein and Copernicus, translated from the Arabic by Gerard of Cremona, and the Alfonsine Tables, also translated from the Arabic. The translation into French from the Arabic of Abd Al Rahman Al Sufi, by Schjellerup, is simply Ptolemy's catalogue for a different epoch; and recently an edition of the Almagest has been published in German by Dr. Karl Manitius.

    TOC

Preface 1-5

Historical 6-15

Errors of Ptolemy's longitudes 16-17

List of manuscripts collated 18

Notes on the manuscripts 19-23

Errors in manuscripts 24

The Catalogue 25-26

Catalogue I 27-50

Catalogue II 51-73

Catalogue III 74-95

Notes to the Catalogue of Stars 96-113

Table of differences of identification 114-119

The star magnitudes 120-143

Notes on the star magnitudes 144-150

Collations of manuscripts -- Longitudes 152-179

Collations of manuscripts -- Latitudes 180-207

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Bonus :

Ptolemy's ALMAGEST, Translated and Annotated by G. J. Toomer

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and more:

In 1612 Galileo, in one of his historical discoveries, observed and draw the sunspots through the telescope for over a month.

– Fictional browsing of Galileo's book.

– The Sun globe is first rotated in order to align it N – S nearly vertically.

– Start of day-by-day fading sequence. Some major data voids are indicated by “blank” maps and brief pauses with no dates.

The abundance and extension of spots reveal both their evolution and the solar rotation.

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