Eclipsis Solis Anno 1675, Die 23 Junii Mane st.n. Observ. Gedani
Author(s)
Joh. Hevelio
Year
1676
Volume
11
Pages
4 pages
Language
la
Journal
Philosophical Transactions (1665-1678)
Full Text (OCR)
24. the very small Vessels] The same with those mentioned Note 21.
25. Bladders] See Dr. Grew's Description of the Pith, and therein of these Bladders, Anat. of Roots part. 2. And Anat. of Trunks, part. 2. Ch. 4.
26. darkish Globules] See the same Ch. p. 34.
27. Extraordinary smallness.] See the same Ch. 32, 33. Note, that these Bladders, whereof the Pith consists, Sign. Malpighi doth also observe; but not the Fibres, of which Fibres (most admirably Woven up together) Dr. Grew hath discovered the said Bladders to be composed. See the same Ch. p. 35.
Eclipsis Solis
Anno 1675, die 23 Junii manef. n. observ.
G E D A N I,
à
Job. Hevelio.
UT ut non omnes & singulas phases in hác Eclipse, ab ipso initio, ob frequentissimas densissimaeque Nubes hic Gedani observare nobis obtigerit; attamen precipuas crescentes ex voto annotare licuit. Sol oriens clarissimus quidem exitit, sic ut ipsum initium admodum distinse, hor. sc. 4. 44', deprehensum fuerit; paulo autem post, hor. sc. 5. 6' nubes Solem nobis planè eripiebant, ut nihil quicquam ad h ram usane 5. 32' deprehendere licuerit, ut ut vigiles semper oculos ad Tabulam observatorem direxerimus. Ex improviso tamen preter omnem strem, hora, ut dixi, 5. 32' nubes Solem rursus deserebant, ut ejus Phases omnes subsequenter, à 1 ad 23, uti ex Schemate liquet, accuratè describere potuerim. Prior phasis ante maximam obscurationem adhuc annotata est; maxima namque obscuratione circa tertiam phasin, hora videlicet 5.39', primum incidit, prout pariter ex ipso typo videre est; Finis contigit hora 6. 33'. 30". Quantitas Eclipseos observata est 6 digit. 42', ad 37' scilicet major, quam calculus Rudolphinus eam promiserat; imò Initium & Finis satis evidenter secundum dictum calculum in hac Eclipse aberravit; quippe liquidum est, ad 12 integra fere minuta tardius incidisse: Semidiameter quoque Luna calculo hác vice non respondet; squidem circa hor. 5.55', alto scilicet Sole 15° fere, Semidiam. Luna non nisi 14°. 37" exitit; cum tamen calculus eam 15°. 29" monstraverit, data nempe semidiametro Solis 15°. Hæc sunt, qua observata in hác Eclipse fuere.
| Calculus Rudolphinus | Observatio | Differentia |
|----------------------|------------|-------------|
| Hor. | Hor. | |
| Initium Gedani, | 4 | 31 | 44 | 0 | 12 |
| Maxima obscur. | 5 | 28 | 20 | 5 | 39 | 0 | 11 |
| Finis | 6 | 24 | 58 | 6 | 33 | 30 | 9 |
| Duratio | 1 | 53 | 16 | 1 | 50 | 0 | 3 |
| Quantitas, vj. digit.| 5' | vj. dig. | 42' | | | | 37 |
Eclips.
Eclips. Sol.
Anno 1675, die 23 Iunii observ.
G E D A N I.
| Animavertenda | Temp. ex sciat | Tempore Correcto |
|---------------|----------------|------------------|
| Solis centrum in horizonte, | 3 21 39 | Hor. |
| Nihil in Sole, | 3 56 30 | |
| Sol sub nubibus, | 4 6 0 | |
| Nihil in Sole, | 4 35 0 | |
| Nihil in Sole, | 4 37 10 | |
| Nihil in Sole, | 4 40 0 | |
| Nihil adhuc, | 4 42 0 | |
| Initium, | 4 44 0 | |
| Nubes Solem planè occultarunt, | 4 54 30 | |
| Sol nusquam apparuit, | 5 6 0 | |
| 1 6½ digit. ferè obscurati erant, | 5 32 0 | |
| cum Sol rursus emicuit. | | |
| 2 6½ digit. dig. | 5 34 0 | |
| 3 Maxima ferè obscurat. | 5 38 50 | |
| 4 | 5 40 30 | |
| 5 | 5 42 0 | |
| 6 6½ digit. | 5 43 30 | |
| 7 6½ digit. | 5 47 30 | |
| 8 6 digit. | 5 49 30 | |
| 9 5½ digit. Diamet. D°, 14' 37" | 5 55 0 | |
| 10 5 digit. | 5 57 0 | |
| 11 5 fere digit. | 5 59 30 | |
| 12 4½ digit. | 6 2 0 | |
| 13 4½ digit. | 6 4 15 | |
| 14 4 digit. | 6 6 30 | |
| 15 3½ digit. | 6 9 15 | |
| 16 3½ digit. | 6 14 35 | |
| 17 2½ digit. | 6 18 10 | |
| 18 2½ digit. | 6 20 0 | |
| 19 2 digit. | 6 22 0 | |
| 20 1½ digit. | 6 24 0 | |
| 21 1¼ digit. | 6 25 25 | |
| 22 1 digit. | 6 27 10 | |
| 23 ½ digit. | 6 30 30 | |
| Finis. | Altitude ⊙. | |
| Altitude ⊙ | 0 | |
| Altitude ⊙ | 25 20 0 | |
| Altitude ⊙ | 26 36 0 | |
| Altitude ⊙ | 27 40 0 | |
| Altitude ⊙ | 28 5 0 | |
Sofar the Learn'd Hevelius; who was also pleased to communicate his Observation of the Figure of Saturn, as it appeared to him in August, 1675, to be seen in Tab. I., Fig. 3.