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Author: Twysden, John, 1607-1688.
Title: The use of the general planisphere, called the analemma, in the resolution of some of the chief and most useful problems of astronomy by Dr. John Twysden.
Publication Info: Ann Arbor, Michigan: University of Michigan, Digital Library Production Service
2011 December (TCP phase 2)

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Print source: The use of the general planisphere, called the analemma, in the resolution of some of the chief and most useful problems of astronomy by Dr. John Twysden.
Twysden, John, 1607-1688., Palmer, John, 1612-1679., Foster, Samuel, d. 1652.

London: Printed by J. Gain, for Walter Hayes, mathematical-instrument maker, and are to be sold at his house ..., 1685.
Also includes: The planetary instrument, or, The description and use of the theories of the planets ... / by Mr. John Palmer ... (6 p.), and The description and use of the nocturnal / by Samuel Foster ... (8, [4] p. at end), each with caption title.
Reproduction of original in the Cambridge University Library.
Subject terms:
Planispheres -- Early works to 1800.
Astronomy -- Early works to 1800.

title page
PROBLEM I. The Sun's Place being given, to find his De∣clination.
PROB. II. Contrarily, the Declination being given, to find the Sun's Place.
PROB. III. The Place of the Sun being given, to find his Right Ascension.
PROB. IV. The Elevation of the Pole, and Degree of the Ecliptick being given, to find, 1st. The Or∣tive Latitude. 2dly. The Rising and Set∣ting of the Sun. 3dly. The Semidiurnal Arch.
PROB. V. The same things being given, to find the Ascensional Difference.
PROB. VI. To find the Oblique Ascension.
PROB. VII. To find the Oblique Ascension of any other Point in the Ecliptick, not reckoning from the Aequinoctial points, by which you may know whether the said Sign doth ascend Right, or Obliquely.
PROB. VIII. To sind the Hour of the day, the Altitude of the Sun being first observed.
PROB. IX. To find what Degree of the Ecliptick is in the Meridian at any hour given.
PROB. X. To find the Sun's Azimuth at any Altitude given.
PROB. XI. To make an Horizontal DIAL.
PROB. XII. To make an Ʋpright Vertical DIAL.
PROB. XIII. To make a Ʋpright Declining DIAL.
PROB. XIV. To draw the Hour-lines upon a Reclining Plain, whose Face looketh directly toward the North or South.
PROB. XVI. To find when the Twilight begins and ends.
PROB. XVII. Of Spherical Rect-angled Triangles in all their Varieties.
PROB. XVIII. How to erect a Figure of the Heavens.
PROB. XIX. In order to find the Cusps of the other Houses, divers Spherical Triangles are to be Re∣solved.
The Use of the THEORIES.
The Description and Use of the NOCTURNAL; By Mr. Samuel Foster, late Reader of Astronomy in Gresham-Col∣ledge.
The Use of the Nocturnal.
Additions to the Instrument, in Brass, made by Mr. R. Aug. 1st. 1684. Calculated for the Year 1700, which will make some little difference in the aforesaid Precepts.
To know at any time proposed, what Point of the Ecclip∣tick is in the Meridian.
To know when any of the Planets shall come to the Meridian.
table of stars
diagonal scale
tables of zodiacal ascension