Huygens, Christiaan, Christiani Hugenii opera varia; Bd. 2: Opera geometrica. Opera astronomica. Varia de optica

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          <p>
            <s xml:id="echoid-s5469" xml:space="preserve">
              <pb o="542" file="0270" n="283" rhead="CHRIST. HUGENII"/>
            niam alias quoque vicinam illi animadverteram, ſimilique fe-
              <lb/>
            re poſitu.</s>
            <s xml:id="echoid-s5470" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5471" xml:space="preserve">Porrò brachia Saturni recta quidem utrinque extenſa cer-
              <lb/>
              <note position="left" xlink:label="note-0270-01" xlink:href="note-0270-01a" xml:space="preserve">TAB. XLVII.
                <lb/>
              fig. 6.</note>
            nebantur, ſed verſus extremas cuſpides craſſiora paulo quam
              <lb/>
            qua parte Saturni diſco cohærebant, qualia ſequens ſchema
              <lb/>
            exhibet.</s>
            <s xml:id="echoid-s5472" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5473" xml:space="preserve">Eâque formâ uſque ad occaſum Heliacum Saturnus perſtitit.
              <lb/>
            </s>
            <s xml:id="echoid-s5474" xml:space="preserve">Cæterum cum poſt phaſin rotundam Anni 1656 brachia
              <lb/>
            denuo recepiſſet, eadem quidem illa forma reverſa eſt
              <lb/>
            duodecempedali tubo ſpectanda: </s>
            <s xml:id="echoid-s5475" xml:space="preserve">ſed tunc majori tubo 23
              <lb/>
              <note position="left" xlink:label="note-0270-02" xlink:href="note-0270-02a" xml:space="preserve">TAB. XLIX.
                <lb/>
              fig. 6.</note>
            pedum adhibito alteram hanc figuram veriorem eſſe patuit;
              <lb/>
            </s>
            <s xml:id="echoid-s5476" xml:space="preserve">unde antea quoque talem extitiſſe credibile fiebat, quæ ta-
              <lb/>
            men minori teleſcopio perfectè conſpici nequiiſſet. </s>
            <s xml:id="echoid-s5477" xml:space="preserve">At li-
              <lb/>
            neam illam obſcuram, brachia utraque conjungentem, ac to-
              <lb/>
            ta tamen infra ſe relinquentem, etiam 12 pedum teleſcopio
              <lb/>
            notavimus.</s>
            <s xml:id="echoid-s5478" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5479" xml:space="preserve">Die ſequenti, nempe 26 Martii ſtella a eodem modo ea-
              <lb/>
              <note position="left" xlink:label="note-0270-03" xlink:href="note-0270-03a" xml:space="preserve">TAB. XLVII.
                <lb/>
              fig. 7.</note>
            demque qua prius diſtantia juxta Saturnum collocata erat,
              <lb/>
            b verò duplo quam ante remotior. </s>
            <s xml:id="echoid-s5480" xml:space="preserve">Unde, quum diſtantia
              <lb/>
            inter ſe ſtellularum a & </s>
            <s xml:id="echoid-s5481" xml:space="preserve">b major eſſet effecta, ſequebatur vel
              <lb/>
            utramque vel alteram ſaltem erraticam eſſe. </s>
            <s xml:id="echoid-s5482" xml:space="preserve">Et ſtellam qui-
              <lb/>
            dem a neceſſario talem judicavi, quoniam Saturnum eo tem-
              <lb/>
            pore retrogradum eſſe noveram; </s>
            <s xml:id="echoid-s5483" xml:space="preserve">itaque oportebat cum Sa-
              <lb/>
            turno illam in eandem plagam delatam eſſe, quum alioqui
              <lb/>
            propinquior multo fieri debuiſſet. </s>
            <s xml:id="echoid-s5484" xml:space="preserve">Altera vero b, quomi-
              <lb/>
            nus fixa cenſeretur nihil obſtabat, imo prorſus ita exiſtima-
              <lb/>
            ri conſentaneum erat, cum una die tantum ab illa Saturnus
              <lb/>
            receſſiſſet, quantum motus ejus poſtulabat. </s>
            <s xml:id="echoid-s5485" xml:space="preserve">Neque verò a-
              <lb/>
            liter ſe rem habuiſſe ſequentes obſervationes oſtendunt.</s>
            <s xml:id="echoid-s5486" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5487" xml:space="preserve">Martii 27. </s>
            <s xml:id="echoid-s5488" xml:space="preserve">ſtella a Saturno propior facta erat: </s>
            <s xml:id="echoid-s5489" xml:space="preserve">b verò
              <lb/>
              <note position="left" xlink:label="note-0270-04" xlink:href="note-0270-04a" xml:space="preserve">TAB.
                <lb/>
              XLVIII.
                <lb/>
              fig. 1.</note>
            adhuc longius receſſerat.</s>
            <s xml:id="echoid-s5490" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5491" xml:space="preserve">Inde nubili dies interceſſerunt uſque ad 3 Apr. </s>
            <s xml:id="echoid-s5492" xml:space="preserve">quo die
              <lb/>
            fixam b non amplius annotavi, ſed ſtellula a migraverat ad Sa-
              <lb/>
            turni latus Orientale, rurſuſque fere 3 ſcrupulis diſtabat. </s>
            <s xml:id="echoid-s5493" xml:space="preserve">fig. </s>
            <s xml:id="echoid-s5494" xml:space="preserve">2.</s>
            <s xml:id="echoid-s5495" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5496" xml:space="preserve">Quinque diebus ſequentibus, rurſus ut ante impeditæ ob-
              <lb/>
            ſervationes.</s>
            <s xml:id="echoid-s5497" xml:space="preserve"/>
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