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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 187, page id 820424455:0209
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1
e
dect. 3.
oromat nona aesuaee: cecadoris pladclplatel
ASTRONO MTA
non nili 25
ad lurttu
remorioris p3
ala eta eccucie rcino  p aoa e
quod paraltaxis Horia so lalutue a leceloribus
PROBLEMA IV
invenire obliquitatem Eclipticae.
l die Solsticii xectiri capiatur alciiudo Solis meridiana,
ua per veram parallaxin limitetur, quali ex centroterrae
Dectaca Puisset; _ ab hac alcieusine solstiriali meridiana d
ec per parallaxin limitata auteratur alciendo xequatoris, sive
complementum elerationis poli; restar maxima declinacio
Solis, quam vocane obliquirarem Felipricae, v. gr. Alricudo
solis meridiana solsticialis quanca revera observara fuerie
Jehoni, ex obliguicare Fcliprica, quam Cacuie iple, 
Parallaxi Porizontali concludi poret. Facit enim ille obli-
uitarem Fclipricae 230. 31. 30. C parallaxin Horizonta
em 3, e elerationem poli lranopvroici detinit 55. 54 2
Erso eleratio Aguaroris exaL 34. 5Z. AEque ut parallaxin
Solis meridiani ex Hlorizoncali trium minutorum supposica
concludamus, opus est coenitâ prarer proprer alcirudine
ejuldem, quae sane fuit compolita ex alcicudine xequatoris e
obliquicate Felipricx maximâ, quam Aatuences canrispet
cum ipto 23. 312. collisimus alcirudinem meridianam 57
5). Quanram credebat Lrcho Fucuram, sI Cx CeNErOTerrE
Dectara fuisset. Arqui huic alcicudini comperie parallaxis
362, dummodo Horizoncalis supponatur 3. Ista igi-
cux parallaxis r. 36= simul continetur in existimata alritu-
dine 572
37. Ergo subductis 1. 36 2, rectat alcitudo per
inttrumenta deprehensa 570. 35. 23 2. Fluic POrro ad
dences veram parallaxin 7 Z orram ex suppolita parallaXI
Torizoncali 25, collisimus alcicudinem Colstirialem meri-
dianam