Blancanus, Josephus, Sphaera mvndi, sev cosmographia demonstratiua , ac facile methodo tradita : in qua totius Mundi fabrica, vna cum nouis, Tychonis, Kepleri, Galilaei, aliorumq' ; Astronomorum adinuentis continentur ; Accessere I. Breuis introductio ad geographiam. II. Apparatus ad mathematicarum studium. III. Echometria, idest Geometrica tractatio de Echo. IV. Nouum instrumentum ad Horologia

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        <div xml:id="echoid-div303" type="section" level="1" n="210">
          <pb o="147" file="0169" n="174" rhead="Liber Decimustertius."/>
        </div>
        <div xml:id="echoid-div304" type="section" level="1" n="211">
          <head xml:id="echoid-head225" style="it" xml:space="preserve">Constructio, & vſus Tabulæ præcedentis.</head>
          <p>
            <s xml:id="echoid-s13326" xml:space="preserve">CVm igitur ad datum tempus, quærendus eſt locus Martis in Zodiaco debemus, accommodato prius
              <lb/>
            tempore vulgari ad vſum Aſtronomicum, vt alias docuimus; </s>
            <s xml:id="echoid-s13327" xml:space="preserve">accipere per ſingulas temporis ſpecies
              <lb/>
            motus medios eis reſpondentes ex præſenti Tabula; </s>
            <s xml:id="echoid-s13328" xml:space="preserve">necnon motum Radicis, eoſque motus in ſummam
              <lb/>
            vnam colligere. </s>
            <s xml:id="echoid-s13329" xml:space="preserve">Hæc enim dabit motum longitudinis Martis, ideſt, diſtantiam centri epicycl
              <unsure/>
            i ab æquino-
              <lb/>
            ctio, ſeu locum eius in Zodiaco qui etiam dicitur medius motus Martis. </s>
            <s xml:id="echoid-s13330" xml:space="preserve">Secundo oportet habere Solis lo-
              <lb/>
            cum in Zodiaco ad idem tempus datum, ſiue ex calculo, ſiue aliunde. </s>
            <s xml:id="echoid-s13331" xml:space="preserve">Tertio detra r
              <unsure/>
            endus eſt motus Mar-
              <lb/>
            tis iam inuentus, ex motu Solis inuento, reſiduus enim motus, cui eſt diſtantia Solis a centro epicycli, eſt
              <lb/>
            etiam ſimul diſtantia Martis ab apogæo epicycli. </s>
            <s xml:id="echoid-s13332" xml:space="preserve">vti ſuperius dictunr
              <unsure/>
            eſt; </s>
            <s xml:id="echoid-s13333" xml:space="preserve">quare abſque alio calculo ſic ha-
              <lb/>
            bebimus motum anomaliæ Martis. </s>
            <s xml:id="echoid-s13334" xml:space="preserve">vnde cognoſcitur locus eius in peripheria epicycli. </s>
            <s xml:id="echoid-s13335" xml:space="preserve">ex quo locum eius
              <lb/>
            in Zodiaco plus minus conijcere licebit. </s>
            <s xml:id="echoid-s13336" xml:space="preserve">non enim hic exactum calculum intendimus, ſed eum, qui nobis
              <lb/>
            tantummodo locum Martis in cælo aliquo modo demonſtret, vnde ſydus ipſum noctu cognoſcere valea-
              <lb/>
            mus. </s>
            <s xml:id="echoid-s13337" xml:space="preserve">Exemplo res fiet illuſtrior: </s>
            <s xml:id="echoid-s13338" xml:space="preserve">ſit ad Meridianum Venetum, data hora prima noctis diei 23. </s>
            <s xml:id="echoid-s13339" xml:space="preserve">Decem-
              <lb/>
            bris anni 1616. </s>
            <s xml:id="echoid-s13340" xml:space="preserve">qua hæc ſcribo, quæ eſt hora prima noctis quæ præcedit vigiliam Natiuitatis Domini. </s>
            <s xml:id="echoid-s13341" xml:space="preserve">hac
              <lb/>
            igitur hora abſoluta ſcire libeat locum Martis in Zodiaco. </s>
            <s xml:id="echoid-s13342" xml:space="preserve">tempus datum Aſtronomicè accommodatum
              <lb/>
            fic ſe habet.</s>
            <s xml:id="echoid-s13343" xml:space="preserve"/>
          </p>
          <note position="right" xml:space="preserve">
            <lb/>
          # Sig. # Gra.
            <lb/>
          Anni radicis 1600. # 10 # 1
            <lb/>
          Anni completi 15. # 11 # 21
            <lb/>
          Menſis Nouembris Biſſext. # 5 # 26
            <lb/>
          Dies 23. completi in me- # 0 # 12 # ridie diei 23. ciuilis.
            <lb/>
          Horæ 5 {1/2} # 0 # 0.
            <lb/>
          Summa # 4 # 0 # in fine Cancri ♋.
            <lb/>
          </note>
          <p>
            <s xml:id="echoid-s13344" xml:space="preserve">Primo igitur pro annis 1600. </s>
            <s xml:id="echoid-s13345" xml:space="preserve">accipio ex Tabula. </s>
            <s xml:id="echoid-s13346" xml:space="preserve">Radicem ſigna 10. </s>
            <s xml:id="echoid-s13347" xml:space="preserve">grad. </s>
            <s xml:id="echoid-s13348" xml:space="preserve">1. </s>
            <s xml:id="echoid-s13349" xml:space="preserve">quam eis in directum ſcribo.
              <lb/>
            </s>
            <s xml:id="echoid-s13350" xml:space="preserve">idem racio pro annis 15. </s>
            <s xml:id="echoid-s13351" xml:space="preserve">compietis, &</s>
            <s xml:id="echoid-s13352" xml:space="preserve">c. </s>
            <s xml:id="echoid-s13353" xml:space="preserve">vt apparet in ſormul
              <unsure/>
            a: </s>
            <s xml:id="echoid-s13354" xml:space="preserve">quorum motuum ſumma eſt ſigna 4. </s>
            <s xml:id="echoid-s13355" xml:space="preserve">tantum. </s>
            <s xml:id="echoid-s13356" xml:space="preserve">
              <lb/>
            vnde colligitur centrum epicycli nunc diſtare ſignis 4. </s>
            <s xml:id="echoid-s13357" xml:space="preserve">ab æquinoctio verno, ideſt, eſſe in principio Leonis. </s>
            <s xml:id="echoid-s13358" xml:space="preserve">
              <lb/>
            omiſiæ ſunt horæ in hac calculatione, quod parum diſ
              <unsure/>
            criminis i
              <unsure/>
            nferant. </s>
            <s xml:id="echoid-s13359" xml:space="preserve">Secundo habeatur locus Solis in
              <lb/>
            Zodiaco, eſt autem nunc in primo gradu Capricorni: </s>
            <s xml:id="echoid-s13360" xml:space="preserve">quare motus ei
              <unsure/>
            us eſt ſig. </s>
            <s xml:id="echoid-s13361" xml:space="preserve">9. </s>
            <s xml:id="echoid-s13362" xml:space="preserve">grad. </s>
            <s xml:id="echoid-s13363" xml:space="preserve">1. </s>
            <s xml:id="echoid-s13364" xml:space="preserve">a quo fi dematur
              <lb/>
            motus Martis præd ctus, remanet eorum diſtantia ſignorum 5. </s>
            <s xml:id="echoid-s13365" xml:space="preserve">grad. </s>
            <s xml:id="echoid-s13366" xml:space="preserve">1. </s>
            <s xml:id="echoid-s13367" xml:space="preserve">quæ diſtantia æqualis eſt anomaliæ,
              <lb/>
            ideſt, totidem ſignis, & </s>
            <s xml:id="echoid-s13368" xml:space="preserve">grad. </s>
            <s xml:id="echoid-s13369" xml:space="preserve">diſtat ſtella Martis ab apogæo ſui epicycli. </s>
            <s xml:id="echoid-s13370" xml:space="preserve">vnde colligitur Martem eſſe in
              <lb/>
            ſemicirculo orie@tali epicycli: </s>
            <s xml:id="echoid-s13371" xml:space="preserve">diſtareque ab apogæo ſignis 5. </s>
            <s xml:id="echoid-s13372" xml:space="preserve">Ex quious locum eius in Zodiaco ſic abſque
              <lb/>
            Tabula æquati
              <unsure/>
            onum venabimur. </s>
            <s xml:id="echoid-s13373" xml:space="preserve">Sciendum enim eſt, tantam eſſe epicycli Martis amplitudinem, vt quan-
              <lb/>
            do terris fit propinquior, eius ſemidiameter ſubtendat in cælo grad. </s>
            <s xml:id="echoid-s13374" xml:space="preserve">rerè 47. </s>
            <s xml:id="echoid-s13375" xml:space="preserve">quando autem remotior eſt
              <lb/>
            ſubtendat grad. </s>
            <s xml:id="echoid-s13376" xml:space="preserve">37 tunc autem terris propior eſt, cum Sol
              <unsure/>
            i magis opponitur; </s>
            <s xml:id="echoid-s13377" xml:space="preserve">tunc ſubdimior, cum Solem
              <lb/>
            magis accedit. </s>
            <s xml:id="echoid-s13378" xml:space="preserve">nunc autem cum diſtet a Sole ſignis 5. </s>
            <s xml:id="echoid-s13379" xml:space="preserve">grad. </s>
            <s xml:id="echoid-s13380" xml:space="preserve">1. </s>
            <s xml:id="echoid-s13381" xml:space="preserve">ſequitur ei ferè opponi, ac proinde ſubtende-
              <lb/>
            re in cælo gradus paulo pauciores, quam
              <unsure/>
            47. </s>
            <s xml:id="echoid-s13382" xml:space="preserve">præterea notandum Martem tunc maximè diſtare a centro epi-
              <lb/>
            cycli, ſecundum longitudinem Zodiaci, quando diſtat ab apogæo epicycli ſignis 4. </s>
            <s xml:id="echoid-s13383" xml:space="preserve">cum partibus 17. </s>
            <s xml:id="echoid-s13384" xml:space="preserve">cum
              <lb/>
            igitur nunc anomalia ſit ſig. </s>
            <s xml:id="echoid-s13385" xml:space="preserve">5. </s>
            <s xml:id="echoid-s13386" xml:space="preserve">ſequi
              <unsure/>
            tur Martem minus diſtare a centro epicycli
              <unsure/>
            quam grad
              <unsure/>
            . </s>
            <s xml:id="echoid-s13387" xml:space="preserve">47. </s>
            <s xml:id="echoid-s13388" xml:space="preserve">conſideran-
              <lb/>
            dum etiam Martem in apogæo, & </s>
            <s xml:id="echoid-s13389" xml:space="preserve">perigæo epicycli nihil diſtare a centro epicycli, quare cum maxim
              <unsure/>
            è di-
              <lb/>
            ſtet, quando diſtatab apogæo vtrinque ſigni
              <unsure/>
            s 4. </s>
            <s xml:id="echoid-s13390" xml:space="preserve">grad. </s>
            <s xml:id="echoid-s13391" xml:space="preserve">17. </s>
            <s xml:id="echoid-s13392" xml:space="preserve">nunc autem diſtat a perigæo vnico ſigno licet exi-
              <lb/>
            ſtimare eum diſtare a centro epicycli veri
              <unsure/>
            us orientem circit
              <unsure/>
            er grad. </s>
            <s xml:id="echoid-s13393" xml:space="preserve">38. </s>
            <s xml:id="echoid-s13394" xml:space="preserve">centrum autem epicycli erat in prin-
              <lb/>
            cipio Leonis; </s>
            <s xml:id="echoid-s13395" xml:space="preserve">quare Mars ipſe erit circa grad. </s>
            <s xml:id="echoid-s13396" xml:space="preserve">8. </s>
            <s xml:id="echoid-s13397" xml:space="preserve">Virginis. </s>
            <s xml:id="echoid-s13398" xml:space="preserve">eadem intelligas de altero ſemicirculo epicy-
              <lb/>
            cli occi
              <unsure/>
            dentali, in quo planeta diſtat a centro epicycli verſus occidentem. </s>
            <s xml:id="echoid-s13399" xml:space="preserve">eſt autem ſtella Martis rubi
              <unsure/>
            cun-
              <lb/>
            da, magnaque apparebat, cum eſſet perigæa in epicyclo, & </s>
            <s xml:id="echoid-s13400" xml:space="preserve">oppoſita Soli, quare eam facile dignoſcebam.</s>
            <s xml:id="echoid-s13401" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s13402" xml:space="preserve">Verum hoc loco mouendus eſt mini Lector, pro exactiori, ac facillimo Solis, ac Martis calculo, D. </s>
            <s xml:id="echoid-s13403" xml:space="preserve">Cæ-
              <lb/>
            ſarem Marſilium patricium Bononienſem, nobiliſſimum æquè, ac doctiſſimum, rerumq; </s>
            <s xml:id="echoid-s13404" xml:space="preserve">præci
              <unsure/>
            puè Aſtro-
              <lb/>
            non@icarum peritiſ
              <unsure/>
            ſ
              <unsure/>
            i
              <unsure/>
            mum; </s>
            <s xml:id="echoid-s13405" xml:space="preserve">propediem nouas, quæ iam ſub prælo ſunt, labulas editurum.</s>
            <s xml:id="echoid-s13406" xml:space="preserve"/>
          </p>
        </div>
      </text>
    </echo>
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