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Show I73 DE LINEIS HORARIIS vidclicct n b club {emidinmettis a [ma c.1‘cétum cemplcxis angulum, 8: quartzi totius ambitus pane bc.contcnto.vni latcrum a c.3diacsnt Pinna: Foramina bina continentcs d c. l1]1}){1}luteflsllntafiitlfldCHIS :tquidii'mntiam pelita.A Cc'ntl'O autc' a.perpcd1culum dctmttituta f. Pei‘ifetin nutcm b Fcfccanda cflin 9 apartcs :cqualcs, qtu gtadus del7cnfll1',1nOl‘C Vulgate. hatc cit infirumcnti fabrics. . Vfus'aut‘em sins pm ‘ipuus oft ad coaptandns ailtorum altitudmes : pittzmpuc autcm Solis. con {titute cnim initi'umcnti plnno in culttum luper horizontcm , atquc im nptate, Vt Selaris radius pct Foramina pain-.1 d 6. ad: mittatut; intcrim perpendiculo a filibcté pendent: atquoinl‘ttumcti lupcrficicm cormdcntgpcrifc ria inter a b. latus & pcrpcdiculi filum ctit altitude Soliszliec cit arcus b Equotquot cxtitcritgmduum. Nec multo dich1lius dcptchcndcs altitudincm Metidianam. Obfctua- bis cnim illud inl'mns , in quo gnemon fliper hotizontem reétus , ex prreccdcntis capitis dofli‘iiizi,p1'oiicict vmbram in ipfam mei‘idinnam lincam :Initat enim tunc Mcridies:& emnis Vmbra,quam tunc cuiu- flibet pei'pendiculi filum proijcit, meridians. linca cit: Vnde ii in ca. wubm {latim duo puné‘ta fignata per teétam copulantut, copulata iam noua linen meridianaclhEt altitudo Solis in diéto initanti fupm diéle mode captam, dicctur altitude meridiana . Ell: cnim Solis in mctn" collitu ti :iltitudo 86 cius dici altitudinfi maxima. Vctfi omnifi LIBER PRIMVS. 179 rcgionis latitude vcrfiis cam partem computandaquotfiim maior {elllitialis altitude fucmt,ob{eruatam. Hoc paae 6Cafirorum pct infiruméti Feminine. petfpcélottlm,ac Luna: altitudincs mcnfuta‘ buutut . Ncque in Sole & planctis diuctlitatcm ingeret centtotum jnftrumcnti & inundi dillzitiu. Ex altitudinc dcmum :Equinoétialis tui loci , qua: efllatitudinis liuc altitudinis poli complementum, collocntc potcris (rquinoc'lialis horologij planum, adiituin fuzz inclinatienis, hec paéto, in plane mci horizontis dcfcribi lincam m cridianam a but docih‘ina praaccdcntis : quam orthogonaliter in Punc‘to nicest linen d c. Mox in planitie meridiani, fupcr lincam a b. petpcndiculatiter ad hotizentcm confituéta , {upcr punfto C. lincabo Circulnm a Epomm clue pctifctiam a f. tot gi‘aduum, quot habet altitude mquiuoétialisflc ducam tc€tam fc.Tunc enim pla- num,in quo iaccnt dux tech: d c c. c f. ad zquidil'mntiam xquinoclialis fitum crit in hetizente mce.In quo plane linca c E meridians. crit:& linea d C 6. Ext": horse antcmetidianx & Polhncridianx. Gnomon autcm le ipfo Punéto c. Petpcndicularitet :u‘ll‘iOl‘OlOglj Planum excitabitut,qui gnomon hic ctit portio axis mundi. Itaq; '5'): prrcccdcnti capitc & pi'pzfcnti habcmus litumquadruplicis lio- ‘ relegij, {cilicct Acquineétialis, Horizontalis, Met"i achtticalis. Dc quibus Ptotinus cit nobis fingillatim tmétandum. nltitudinum maxima accidit aftro in horizon tis vettice loca to : quo in loco mcridianus I}: cum verticali circulo viciflim difpefcunt : qua: quidcm nltitudo filfcipit totam quadrantis pctifcrmm filo vidclicct Hora/0g] fiqmmfizzzltx dcfiripz‘io. Perpendiculi Foraminatum latus aduetberantcPorre ex obfcruationc metidianarum altitudinum clicitur zodiaci obliquitas, liuc EIOPiCOBL (lii‘tantia. Capiantui‘ cnim dure meridians: altitudines ad duo {olf‘titia l'pcc'l‘antcsdn duobus (cilicet folititialibus dicliusmci'tiuo {cilicct atq; liylierno aflhmptm : Nam dcmpm minori dc 1naiore,fi1pr:rctit diéka IT A Q E planum hotelogij :cquinoc‘tialis habimntibus rub obliquitaszcuius dimidium crit maxima Solis declinatio, Scd huillf- Cap. 9. quuinoé'cinli fungitur ViCC horologi} Vctticalis : quoniam :rqua- ~ tor ibi cit circulus verticalis. In regions autcm {ub vttolibct polo {ita oil: pro hotologio horizonmli : quandoquidcm ibi xquator ell: ipfc horizon. Et vtrebiquc {scanda CF: pctif‘ctia. citculi in tali Plano dcfcripti in 24°‘Pattes equalcs pct X! 1.1incas [do in centre modi obfcruatiefi flat in locis intra ttopicos pofitis, tunc altitudinfi folflitialium mctidianarum complementa coniunél‘a dié‘tam conflul‘:unt obliquitatemllinc loci latitude facillimé notcfcct. Sic Cenifigc duas meridianas {elflitiorum altitudines : & aggrcgati dimidifi cape. Perpendiculatis 86 perinde pats mundani axis, ptoijcict {sniper vmbram horarum indiccm, line it meridic fiuc ab ottu vcl occafu cxorfaszquoniam tcéhis horizon pct Poles inccdcns,cfl dc numcto Illud namque cilaltitude mquntoris tui loci, 13?» cf} , altitude meridians. Solis in scquinoéliali ceiillittiti: Q13 dc circuli quadrantc {ub- citculotum horas 2‘1 meridiano inceptas dillinguentium, vtin {c- cundo Cap. diximus . In obliquis. autcm horizontibus , planum meta, rclinquctur ciufdcm loci latitude : hec Cit, poli altitude ; {cu vctticis ab arquinoétiali temotio. Qua: Oljferuntjo Cum fit inti‘n tropicos,tunc altitudinum felflitialium complements: {unt confydcrfida: (1m; Ii :rqunlin linticcrtum cltlecum i'ulv mquinoflinli litum CHE lativ tudinis CXPCIiL‘lDZi] veto inxqunlia, cxcdlus tum; dimidium ctitipfa a-quinoétialis cum ncque in hotizontc , ncquc in vctticali citculo tcgionis fecantcs : {tylus autcm pct centtum vtrinquc Prominens plane iaccat, ncuti‘ius homm hotologiotum oflicio fungi petcfl : fed inclinandum cit ad fitum mquinoétialis in propofito hotizontc. Exempli gratin, in hoc hotizonte Mcllimx , cuins latitude cflgra~ duum 3 8.21m paulo maiot , dcfctibam in Plano hotizontis lincam M 2. men-x |
