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Christiani Lvdovici Gersten, Math. Prof. Ord. Et Reg. Societ. Lond. Sod. Methodvs Nova Ad Eclipses Terrae Et Appvlsvs Lvnae Ad Stellas Svppvtandos : Svbnectitvr De Observatorii Academiae Giesensis Statv Brevis Enarratio Simvlquve Bonarvm Elegantiorvmqve Scientiarvm Cvltores Ad Avdiendas Fvtvras Per Instans Semestre Lectiones Mathematicas : Ea Qva Par Est Hvmanitate Invitantvr
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2) o(se⸗ 27

angulus circuli declin. per centrum lunae tranteuntis cum meridisno. An- gulus hic cum laticudine oblervatorii Pariſientis& deciinatione C ero- .1

fert altitadinem C= ſ6. 8.& angulum cireuli declinationn cum vecri- / 3 4// 4 cali= 23. 4. Inde conſequitur parallaxis altirudinis 34. 12. Parællazis 7

declinationis= 31. 27.& parallaxis aſc. rect. in circ. parallels= 3. 24. 22) Reductio ergo& diſpoſitio aſcenſionum rectarum& declinasie- num ralis erit: Aſceuſ. Kect. Declin. comper. 0 1 11 0 1 71 in C 48. 7o0. 21.. 18. 38. 77. in O 48. 40. 24. 4 2

ad k. 22. 47. 51. O 49. 42. 1z.. 15. 4. 79. 44 h. 2z. 42 31. C 48. 78. 33. 18. 44. 4, diff. int r-ſc. rect. O. 53: diſt. inter decl. O 25. in o⸗( 43. 32. 14. 18. 39. 23. immoti O 48. 42. 17. 13. 1. ,.

/ 4 ad h. 22. 42. 31. C 43. 58. 38. 18. 49. 39.

Difl. 10. 3. Darall. 2. Piff. 2. 24. decliv. 1

Diff. a reduct.- 9. 33. decl. Cr3. 6. 5o.

Dif. teduct.= 2). 5. vilac. 9O 8. 4. 39. -- C*8. 17. 12.

23) Differentia a eſt diſtantis O immoti a loco C primo: differen- tia 5 vero diſtantia loci C ſecundi a primo in circulo parallelo, cuius

1

90 15 0

0⸗ declinatio 18. 7. Per parallaxes aſc. rect. nunc bina loca C mutantaur in

conſequentia, adeoque additis parallaxibus erunt diſtantiae 4 O immoti 9. 33. C in 20. 27. C in fin. z98. 29.

7 A quodſi tandem ab his numeris ſubducatur minor 9. 33. relinquitur pro 4 qiſtantia loci C in a O immoto 10. 74, pro diſtantia C in fine ecli- C 3 plis