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# Title: Nicolai Mercatoris Holsati, è Soc. Reg. Institutionum Astronomicarum Libri Duo, De Motu Astrorum Communi & Proprio, Secundum Hypotheses Veterum & Recentiorum præcipuas; Deqve Hypotheseon ex observatis constructione (shelfmark Leibn. Marg. 63)
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_
96
1
D
D
M
Cap. 4.
AASTRONOMIA.
cum Lacieudinis dare sideris 64. 30. Invenitur 1. PS
Complementum Declinationis 62.75, ergo Declinario
Rellae est 27. 25. 2. AnB. P 87. 7B addendus 4d 270, AF
Aat Ascensio recta ACIIX 357.78.
CONVERSA.
Dara Declinatione, es Ascensione Recta fideris; L oncit
dinem ejusdem, es Laritudinem invenire.
Cum Ascensio recta sideris incidic in quadrantem A qua-
eoris Sprimum vel quartum, Fig. III. P
lecundum vel cerrium, Fig. IV.
elise Triangulum
P FS pro declinatione sideris boreum vel meridionale, in quo
aotn
1. PF Distancia polorum Equatoris _e Fclipri-
CX 230. 50.
2. PS Complementum Declinationis darxe s-
deris.
procinus, 3. AnG. P, quem mensurat arcus Aiquatoris in-
terceptus cruribus PF _ PS, quorum hoc A-
scensionem rectam sideris productum, illudgra-
dum quatoris 270 vel 90 oftendir.
(T. AnS. P, quem menturat arcus Feliprica interceptus
cruribus FP d FS, quorum hoc Longitudinem (1-
1)
deris, illud punctum solsticiale oftendit.
6(2. F S Complementum lacicudinis.
PROBLEMA TIT.
Data Elevatione poli, et Declinatione sideris: differentiam
ejus ascensionalem. C ex hac (nec non Ascensione recta
sideris pariter data) ascensionem obliguam, arcum semi-
diurnum, moram siaeris supra  infea Floricontem;
implicudinem ortivam e occidnam; anculum denique
Orientis (seil. puncti Eclipricae) invenire.
ed lacur Cicus lieris respectu A.qualoto, l Gate
s Csus lespecti Horizonris obliqui dati.