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# Title: [Tabularum Astronomicarum Pars Prior De Motibus Solis Et Lunae, Nec-Non De Positione Fixarum Ex ipsis Observationibus deductis] Tabularum Astronomicarum Pars Prior De Motibus Solis Et Lunæ, Nec-Non De Positione Fixarum Ex ipsis Observationibus deductis (shelfmarks Leibn. Marg. 164, Stück 1; Leibn. Marg. 164)
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PR A F A T
fixi. Llu n enum spacio, summa diligencia in-
cuibui, ue instrumenti planum secundum meridianum
collocarem; Ced post mulcas opcrationes a inutationes
Ucracas, temper a deliderata collocatione paululum illud
aberrare obserrationum opc Colis de fixarum aliunde habi-
carum, deprehendi; ac tandem, cum coulque pervenosen
rim, uc duobus in punctis, in horizonte scilicet de circa
quinquasolimum oradum meridiano responderee, in hoc
sicu quadrantem relinquere consticui; ac denique trmavis
nonionarus aliunde quomodo heri poster uc in punctis in-
cermediis a meridiano aberraret: nam quamris nocum sIE
in Gcometria duo plana non esse inter se diverta, (I duas
habeant rectas lineas communes; non ideo planum meri
diani e superticies deseripta a recta linea, qua cransic per
centrum vieri objectiri ee per punctum laminulae quo uti-
mur in obserrationibus, dum regula limbum instrumenci
percurrie, amul congruene, nihi superticies icta sic plana:
ac vero non erit plana, led conica li dictantia a centro vi
eri objectiri ad superticiem instrumenti quam accurate
planam supponimus, non sic axequalis distantix à puncto
tili, quod est diopera orularis, ad eandem luperticiem,
quod obserracionibus tancum; non qualibee mensura
percipi porerie, e luperticies conica hoc modo descripea
duabus in rectis lineis plano meridiani occurret, cum i
punctis incermediis hinc inde diragetur.
Firmato itague instrumento ad ejus deviacionis co-
onitionem in ingulis limbi punctis torum me converci,
quod tandem assecurus sum ex obserrationibus Colis ee RCI-
rum ante ex posteransicum per meridionum habicis alio cri-
Dedali quadrance portatili. Pali methodo ed certiores u-
mus de cempore quo sidera ad meridianum appollunt,
quod diritiones instrumenei porcacilis, cujus opc aleicu-
dines respondentes oblerrantur, quomodocunque se ha-
beane, nalli sine impedimeneo exactae decerminationi
transicus astri per meridianum; cum (xpiltime sex obser-
rationes ne uno quidem quadrante scrupuli secundi a