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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)
# Folio 41, page id 820424455:0063
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6
ASTRONO MFA
C ON V B R S A.
Dara Declinatione vel Ascensione recta Solis; Congirudinem
ejnsdem invenire.
Hic datur sicus Solis respectu A quatoris, e quaeritur Citus
ejus in Feliprica.
Flixe quadeantem, in guo Sol verlatur, qui ex Ascen-
sione Recta data innocescir; ac daca Declinatione, indicari
deber quadrans. Tum in Triangulo RVO, vel R O,
T.. ANB. Y Vel r 23.5O.
dantur praetep )2. Crus alterurrum, RC Declinario Solis,
rectum ad R)
vel RV (R _) arcus in Equarore nume-
randus ab Aequinoctio propiori ad era-
dum usque Ascensionis recta.
Oux. FYO vel  Odistanria Solis ab Fquinoctio propiori.
ricur  quam ab hoc ipso numerabis in Ecliprica ad gra-
dum usque Lonsicudinis quaesirum.
Exemplum. Detur Alcenlio recta SOlis 357. 63. In.
venitur Lonsirudo ejus 27. 42 HE.
Ca. 4.
LROELEMA A.
Dara Lonnahe s Lautudine sideris extra F. clipticam siti3
Dectinationem eju (dem es Ascensionem rectam invenire.
Flic darde litus lideris respectu Lclipricae, licet extra lal
verlantis, ex quaeritur situs ejus respectu A. quatoris.
Cum Longirudo Cideris incidit in lignum
endens Fig.
1117
aliquod Fa
delcendens ft. IV. Selise Friangulum P FS, PrO
lacirieme licetB data voreum, vel meridionale, quod litera
bem inscripea ms, inque electo
dantur