Clavius, Christoph
,
In Sphaeram Ioannis de Sacro Bosco commentarius
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Comment. in II. Cap. Sphæræ
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tur propter motum proprium, quem habet ab occaſu in ortum, melius fortaf
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ſe dicetur Æequator deſcribi a linea recta, quæ à
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centro mundi ad initium ♈,
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uel ♎, primi mobilis extenditur. </
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<
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xml:space
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">Ex circũductione enim huius lineę deſcribe-
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tur in die naturali circulus maximus, & </
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<
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">perfectus, ſemper rectus ad axem mun-
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di, ęqualiterq́; </
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<
s
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echoid-s9168
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xml:space
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">diſtans omni ex parte à mundi polis: </
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<
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xml:space
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">quæ omnia requiruntur ad
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ęquinoctialem circulum.</
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<
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autem omnes circuli cœleſtes, atque adeo & </
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<
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">ęquinoctialis, conci-
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<
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xlink:label
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xml:space
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">Vbi pof
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iſſi
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mũ ſphęræ
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circuli in
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cęlo ſint cõ
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cipiendi.</
note
>
piendi in primo mobili, quod quidem nobis potiſſimum refert ſphæra mate-
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rialis. </
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<
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xml:space
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">Neque multum intereſt, ſiue eos in concauo, ſiue in conuexo primi mo-
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bilis intelligamus: </
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<
s
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xml:space
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">Tamen quia nos intra cœlum incluſi, in eiuſq́. </
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<
s
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xml:space
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">centro exi-
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ſtentes, concauam cœli ſuperficiẽ intuemur, compellimur quodammodo cir-
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culos cœleſtes in eadem ſuperficie concaua primi mo bilis conſiderare, ſicut
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etiam, quia ſumus extra ſphæram materialem poſiti, cogimur eoſdem quodam
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modo circulos in extima, ſeu conuexa eius ſuperficie defignare. </
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<
s
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xml:space
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">Quod etiam
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fit in globo Coſmographico, & </
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xml:space
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">Aſtronomico. </
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<
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xml:space
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">Quoniam uero ex decem ſphæ-
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ræ circulis primarijs Meridianus, atque Horizon ſunt prorſus immobiles in
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quacunque regione ita ut, etiamſi cœlum primum perpetuo, ac indeſinenter
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circumferatur, prędicti duo circuli nihilominus immoti omnino concipiãtur,
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& </
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<
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">firmi; </
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<
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xml:space
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">Alij uero octo mobiles exiſtunt, quippe cum continuè circumuolua-
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tur cum primo mobili; </
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<
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xml:space
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">non erit inconueniens, ſi octo hoſce circulos mobiles
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in conuexa ſuperficie primi mobilis, duos autem illos in concaua ſuperficie
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cœli Empyrei immobilis, ſub quo collocatur primũ mobile, & </
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<
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xml:space
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">totus mundus,
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conſideremus. </
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<
s
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xml:space
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">Ita enim fiet, ut alij circuli mobiles intra hos immobiles perpe
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tuo circumducantur: </
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<
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xml:space
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">quemadmodum etiam in ſphæra materiali cernimus, Me
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rid
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ianum, & </
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<
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xml:space
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">Horizõtem alijs circulis ſupereminere, ut his ſine ceſſatione mo
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tis, illi duo immoti prorſus permaneant.</
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<
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">Ae@noctia
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lis circulus
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cur ſic di-
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ctus. Idẽ cur
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Aequato@,
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& cingulus
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primi mo-
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bilis dica-
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@ur.</
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<
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xml:space
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">ET dicitur Aequinoctialis, quoniam quando Sol tranſit per illum,
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(quod fit in bis in anno, in principio Arietis ſcilicet, & </
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<
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">in principio Li-
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bræ) eſt æquinoctium in uniuerſa terra. </
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<
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xml:space
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">Vnde etiam appellatur Aequator
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diei, & </
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<
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">noctis, quia adæquat diem artificialem nocti. </
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<
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xml:space
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">Et dicitur cingulus pri
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mi motus. </
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<
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xml:space
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">Vnde ſciendum, quod primus motus, di citur motus primi
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mobilis, hoc eſt, nonę ſphæræ, ſiue cœli ultimi, qui eſt ab oriente per occi-
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dentem, rediens iterum in orientem: </
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<
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xml:space
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">qui ctiam dicitur motus rationalis, ad
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ſimilitudinem motus rationis, qui eſt in microcoſmo, id eſt, in homine, ſcili-
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cet quando fit conſider atio à creatore per creatur as in creator em, ibi ſiſten-
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do. </
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<
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xml:space
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">Secundus motus eſt firmamenti, & </
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<
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">planetarum, contrarius huic, ab
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occidente per orientem iterum rediens in occidentem: </
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<
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">qui motus dicitur ir-
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rationalis, ſiue ſenſualis, ad ſimilitudinem mo
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tus microcoſmi, qui eſt à cor-
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ruptibilibus ad creatorem, iterum rediens ad corruptibilia. </
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<
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">Dicitur ergo
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cingulus primi motus, quia cingit, ſiue diuidit primum mobile, ſcilicet ſphæ-
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ram nonam, in duo æqualia, æquidiſtans a polis mundi.</
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