Harmonicon coeleste: or, the coelestiall harmony of the visible world / conteining, an absolute and entire piece of astronomie. Wherein is succinctly handled the trigonometricall part, generally propounded, and particularly applyed in all questions tending to the diurnall motion. Especially respecting, and truly subservient to the main doctrine of the second motions of the luminaries and the other planets : together with their affections as eclipses &c. Grounded upon the most rationall hypothesis yet constituted, and compared with the best observations that are extant, especially those of Tycho Brahe, and other more modern observators ... By Vincent Wing, philomathemat.
- Wing, Vincent, 1619-1668.
- Date:
- 1651
Licence: Public Domain Mark
Credit: Harmonicon coeleste: or, the coelestiall harmony of the visible world / conteining, an absolute and entire piece of astronomie. Wherein is succinctly handled the trigonometricall part, generally propounded, and particularly applyed in all questions tending to the diurnall motion. Especially respecting, and truly subservient to the main doctrine of the second motions of the luminaries and the other planets : together with their affections as eclipses &c. Grounded upon the most rationall hypothesis yet constituted, and compared with the best observations that are extant, especially those of Tycho Brahe, and other more modern observators ... By Vincent Wing, philomathemat. Source: Wellcome Collection.
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![1 If it be required to reduce the time given under the Meridian of to fomc other Meridian, feek the place defired in the Catalogue of Cities^, and the Difference of time there found^ either adde, or fubftrad to or from the time given at / onden^ according as the titles of Addition and Subflradion fhew, for fo will the time be re¬ duced to the Meridian of the other place, that was required. 2 if the time given, be under fome other Meridian,its then requifite (that the mid¬ dle motions may aright be obteined) to reduce the fame to the Meridian of Londor,^ and therefore feeke the Place given in the Catalogue of Cities, and the di&rence of time there found, contrary to the Title, is to be added, or fubftraded from the time there given. Example i. Suppofe the time given of the middle of the Moons Eclipfe be at London^ at lo * P. . and it is required to reduce the fame to the Meridian of Ur^- J therefore feekin the Catalogue of Cities and Places, againft which I finde 50^ with the letter A annexed, therefore I conclude, that the middle of the Eclipfe, which was ohferved at London^ at iol P, M, was feen at tlrmiburge at 101 and P./!/. Example 2. Suppofe the middle of the fame Eclipfe had been obferved at Uram- barge at lo^ 50^, and 1 would then know at what hour and minute the fame happened in the Meridian of London. Againll before) I finde ^o^'A, therefore,con¬ trary to the Title, I fubftrad 50/, and the Refidue 10^ o''is the middle of the Eclipfe in the Meridian of London. CHAP. 11. I'd Calculate the true place of the Sun. Illrft, by the Table encituled [_A Table of the middle motion of the Sun] com¬ pute the middle motion of the Sun, aaid his Apogxonj by adding into one Sum the Numbers belonging to the Year, Moneth, and Day given. . 2 Subftrad the^Apogxan from the middle Longitude of the Sun, and the Refidue will be the fimple Anomalie. • 3 With the 11 m pic Anomalie of the Sun^ enter the Table of the Proflhaphaerefis or ^uation of the 0, finding the Signe in the Head of the Table,and the Degree im^e firft Column on the left hand, when the © Anomalie is leffe then 6 Signes, but when greater then (5,^entcr with the Signe in the bottome of the Table, and with the Degree in the firft Column on the right hand, and in the common angle is the abfolute ^Equa¬ tion of the 0, to be added to, or fubftraded from, the middle motion of the 0, ac¬ cording to the Titles adde, or fubftrad. E X A M p LE. Let the time propofed be the 10 of March 1652, at noon, at which time the © Place is to be enquired. Firft, I enter the Table of the middle motion of the ©, finding the next lefter fumme to the Year propofed, 1601, and fet down the middle motion agreeing thereunto. Secondly, becaufe there is yet wanting Ji Years, I take the next lefter fumme in the Table, entituled QA TaWe of the annuall motion of the ©,&c.] which I finde to be 40, and the middle motion of the © agree¬ ing thereunto towards the right hand, I fubferibe under the former Summe, and be¬ caufe there is yet remaining ii Years, I again enter the faid Table, finding the num¬ ber given, and excerpt the middle motions as before. Laftly, I take in like manner, the^ middle motions belonging to the Moneth, Day, and Hour, and place them in Order, as before, which done, I adde the feverall Summes fo difpofed into one, and the Ag¬ gregate is the middle motion required, as the following Synopfis manifefts. I Longit. 0 S D ' Apog. 0 S D ' 9 ip 54 3 5 43 28 0 0 ly 57 41 5 n zp 20 35 II 18 I 2p 8 19 10 0 p yi 25 3. Middlemotionof ©i It 28 3^48! 3^ 6 36 10. 1^52 at; noon. Now](https://iiif.wellcomecollection.org/image/b30323411_0138.jp2/full/800%2C/0/default.jpg)
