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  "text": "XLVII. Eclipse Lunæ Die 4° Februarii,\nAnn. 1757. habita Ulissipone à Joanne\nChevalier Presbytero Congregationis Ora-\ntorii, Regiæ Londinensis Societatis Socio,\nRegiæque Scientiarum Parisiensis Acade-\nmie correspondente, et a Theodoro de Al-\nmeida ejusdem Congregationis Presbytero,\nac Physicæ publico Professore.\n\nRead Dec. 8. HANC observationem peregì tubo\noptico novem pedes longo, cujus\nlens ocularis focum habebat ad 4 pollices, et lineam\nunam: adhibui preterea vitrum planum cæruleum,\nquod oculum inter et ocularem lentem interpone-\nbam, ut ingressum macularum in umbram observarem\njuxta ea quæ in observatione eclipsis lunæ ann. 1755.\ninvenit clarissimus vir Josephus Soares de Barros ex\nregia Berolinensi academia. Primum igitur vitro\ncæruleo adhíbito observabam ingressum maculae in\numbram, et tempore notato iterum solo tubo optico\ningressum ejusdem maculae in umbram observabam,\net differentiam utriusque ingressus notabam.\n\nInitio eclipsis cœlum serenum ac clarum fuit,\npostea nubilum, et post maximam obscurationem\nvapores horizontis et claritas incipientis diei observa-\ntionem peragere impediere.\n\n| Initium penumbrae | — | — | 4 | 52 | 49 |\n| Initium dubium eclipsis | — | — | 4 | 55 | 29 |\n| Certo jam incæperat | — | — | 4 | 57 | 30 |\n\nManè.\nUmbra ad Aristarchum observata vitro cæruleo plano — — — 5 00 19\nSolo tubo optico adhibito — — — 5 00 50\nKeplerus umbram ingreditur observatus tubo, et vitro cæruleo plano — — — 5 13 20\nObservatus solo tubo optico — — — 5 14 00\nPlato umbram ingreditur observatus tubo, et vitro cæruleo — — — 5 15 2\nSolo tubo — — — 5 15 40\nUmbra ad Eudoxum — — — 5 17 18\nMare serenitatis incipit mergi — — — 5 30 10\nCopernicus observatus tubo et vitro cæruleo umbram ingreditur — — — 5 36 48\nSolo tubo — — — 5 37 22\nMare Crisium ingreditur umbram — — — 5 53 51\nMedium in umbra — — — 5 59 30\nTotum mergitur — — — 6 5 21\nMare fœcunditatis occultari incipit — — — 6 7 41\nUmbra ad promontorium acutum — — — 6 8 33\nUmbra tangit mare nectaris — — — 6 22 51\nUmbra ad Langrenum — — — 6 23 33\n\nObservationes Eclipseum Satellitum Jovis Ulissipone habitæ a Joanne Chevalier, &c.\n\nANNO 1757 telescopio Gregoriano 7 pedum nocte serena, nullâque lunari luce illustrata, observavi immersionem totalem primi satellitis die 21 Martii tempore vero postmeridiano — 11h 13' 1\"'\n\nDie vero 22 Martii tempore vero, et antemeridiano, observavi immersionem totalem tertii satellitis obh 13' 32\"'\n\nVol. 50. Ccc XLVIII.",
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    "identifier": "jstor-105272",
    "title": "Eclipsis Lunae Die 4 degrees Februarii, Ann. 1757. Habita Ulissipone à Joanne Chevalier Presbytero Congregationis Oratorii, Regiae Londinensis Societatis Socio, Regiaeque Scientiarum Parisiensis Academiae Correspondente, et a Theodoro De Almeida Ejusdem Congregationis Presbytero, ac Physicae Publico Professore",
    "authors": "Theodoro de Almeida",
    "year": 1757,
    "volume": "50",
    "journal": "Philosophical Transactions (1683-1775)",
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