Clavius, Christoph
,
In Sphaeram Ioannis de Sacro Bosco commentarius
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<
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65
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file
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101
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102
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rhead
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Ioan. de Sacro Boſco.
"/>
octauo & </
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>
<
s
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echoid-s3298
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xml:space
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">poſtremo Firmamentum. </
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<
s
xml:id
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echoid-s3299
"
xml:space
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preserve
">Vides igitur omnes opiniones in eo con-
<
lb
/>
uenire, vt cœlum ſtellarum fixarum ſupremo loco collocetur, & </
s
>
<
s
xml:id
="
echoid-s3300
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xml:space
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">ſub hoc Satur
<
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nus, ſub quo Iuppiter, & </
s
>
<
s
xml:id
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echoid-s3301
"
xml:space
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">deinde Mars: </
s
>
<
s
xml:id
="
echoid-s3302
"
xml:space
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">In alijs vero quatuor planetis totam di-
<
lb
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uerſitatem eſſe poſitam. </
s
>
<
s
xml:id
="
echoid-s3303
"
xml:space
="
preserve
">Quare breuiter ordinem iam recitatum confirmabi-
<
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mus. </
s
>
<
s
xml:id
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echoid-s3304
"
xml:space
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">Primo quidem ex diuerſitate aſpectus. </
s
>
<
s
xml:id
="
echoid-s3305
"
xml:space
="
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">Deinde ex velocitate & </
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>
<
s
xml:id
="
echoid-s3306
"
xml:space
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">tarditate
<
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/>
motus. </
s
>
<
s
xml:id
="
echoid-s3307
"
xml:space
="
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">Tertio ex eclipſibus ſeu occultationibus planetarum. </
s
>
<
s
xml:id
="
echoid-s3308
"
xml:space
="
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">Hoc enim triplici
<
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medio potiſſimum ordo cœlorum ab aſtronomis confirmari ſolet.</
s
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xml:space
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</
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<
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xml:space
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">Ordo Pla-
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netarum cõ
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firmatur
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ex diuerſitæ
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te aſpectus.</
note
>
<
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<
s
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<
emph
style
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emph
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attinet ad diuerſitatem aſpectus, hoc modo argumentantur. </
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>
<
s
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echoid-s3311
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xml:space
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">Illud
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aſtrum eſt terræ uicinius, quod, cæteris paribus, maiorem habet diuerſitatem
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aſpectus. </
s
>
<
s
xml:id
="
echoid-s3312
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xml:space
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">Atqui Luna maximam deprehenſa eſt pati aſpectus diuerſitatem, dein
<
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de Mercurius, poſtea Venus, deinceps Sol. </
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>
<
s
xml:id
="
echoid-s3313
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xml:space
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">Igitur conſtat primo loco collocan-
<
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dam eſſe Lunam; </
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>
<
s
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echoid-s3314
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xml:space
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">ſecundo Mercurium, tertio Venerem; </
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>
<
s
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echoid-s3315
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xml:space
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">& </
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<
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">quarto Solem. </
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<
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echoid-s3317
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xml:space
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">De
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<
note
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xlink:label
="
note-101-02
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xlink:href
="
note-101-02a
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xml:space
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">Diuerſitas
<
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aſpectus
<
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quid.</
note
>
reliquis vero planetis ex hac uia nihil ſtatui poteſt certi, cum propter nimiam
<
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eorum aterra diſtantiam nullam habeant diuerſitatem aſpectus. </
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>
<
s
xml:id
="
echoid-s3318
"
xml:space
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">Quod ut ple-
<
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nius intelligatur, dicenda erunt pauca de hac diuerſitate aſpectus. </
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>
<
s
xml:id
="
echoid-s3319
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xml:space
="
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">Diuerſitas
<
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/>
igitur aſpectus, quam alij dicunt aſpectum diuerſitatis, eſt differentia ueri, uiſi-
<
lb
/>
<
note
position
="
right
"
xlink:label
="
note-101-03
"
xlink:href
="
note-101-03a
"
xml:space
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">Verus locus
<
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aſtri quid.</
note
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q́ue loci alicuius aſtri. </
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>
<
s
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="
echoid-s3320
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xml:space
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">Verus porro locus aſtri dicitur punctũ illud circuli ma-
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ximi per uerticem capitis, & </
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>
<
s
xml:id
="
echoid-s3321
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xml:space
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">aſtrum tranſeuntis, ꝗ
<
unsure
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lineam rectam e centro terrę
<
lb
/>
<
note
position
="
right
"
xlink:label
="
note-101-04
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xlink:href
="
note-101-04a
"
xml:space
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">Verus lo-
<
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cus aſtri
<
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quid.</
note
>
per centrum aſtri ad circulum illum maximum protractam terminat: </
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>
<
s
xml:id
="
echoid-s3322
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xml:space
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">Viſus ue-
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ro locus ſideris dicitur illud punctum eiuſdẽ circuli maximi, ꝗ
<
unsure
/>
lineam rectam
<
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ab oculo noſtro per ſideris centrũ ad circulum illum maximũ eductã terminat.
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</
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<
s
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<
figure
xlink:label
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fig-101-01
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xlink:href
="
fig-101-01a
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number
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11
">
<
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file
="
101-01
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xlink:href
="
http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/101-01
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Exemplum. </
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cẽtrum terrę A;
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</
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<
s
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">Circulus maxi-
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m
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>
per uerticem
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capitis D, & </
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<
s
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">ſtel-
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lã trãſiẽs C D E. </
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<
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Locus terræ ver-
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tici D, ſubiectus
<
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ſit B; </
s
>
<
s
xml:id
="
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xml:space
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">aſtrũ quod
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cunque ſit K, per
<
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cuius centrum a
<
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centro terræ du-
<
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catur linea recta
<
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A K S; </
s
>
<
s
xml:id
="
echoid-s3329
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xml:space
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">item per
<
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eiuſdem ſtellæ cẽ
<
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/>
trum ducatur ex
<
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/>
B, loco terræ linea recta B K T. </
s
>
<
s
xml:id
="
echoid-s3330
"
xml:space
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">Verus igitur locus aſtri K, eſt punctum S: </
s
>
<
s
xml:id
="
echoid-s3331
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xml:space
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">Vi-
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ſus uero locus punctum T; </
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>
<
s
xml:id
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echoid-s3332
"
xml:space
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">differentia autem ueri uiſiq́ue loci, arcus videlicet
<
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S T, dicitur diuerſitas aſpectus aſtri K; </
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>
<
s
xml:id
="
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xml:space
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">angulus uero, qui in centro ſtellæ effi-
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citur ex duabus illis lineis rectis, qualis in dato exemplo eſt angulus A K B,
<
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appellariſolet quantitas diuerſitatis aſpectus ab Aſtronomis: </
s
>
<
s
xml:id
="
echoid-s3334
"
xml:space
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">ita ut ſi in duo-
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bus aſtris efficiuntur tales anguli æquales, dicantur habere æqualem diuerſi-
<
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tatem aſpectus; </
s
>
<
s
xml:id
="
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"
xml:space
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">in cuius uero centro maior continetur angulus, illud maio-
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rem habeat aſpectus diuerſitatem.</
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>
<
s
xml:id
="
echoid-s3336
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</
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<
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>
<
s
xml:id
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xml:space
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">Ex quo perſpicuum fit, ſi duo aſtra in eodem cœlo exiſtentia eandem ha-
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beant altitudinem ſupra Horizontem, cuiuſmodi ſunt aſtra H, & </
s
>
<
s
xml:id
="
echoid-s3338
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xml:space
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">O, æquali-
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ter diſtantia a uertice M, ea eandem diuerſitatem aſpectus habere. </
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>
<
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