Full text: Tychonis Brahe Dani Thesaurus Observationum (Tomus X, Tomus I)

II. Pro discretione parallaxium in Afcenfione R. et Declinatione. 
In ABD dantur 
BA 34 5 30 
DB 50 30 20 
ABD 116 19 50 
Ergo DA 70 26 13 Compì, verse 
deci. d 
BAD 47 13 20 vera dift. d 
a merid. 
Ergo vera Afc. R. d 
75 311 
Deci. B 
19 33 47 
Refp. Long. 
16 21 47X 
Lat. 
3 16 42 
DIE 8 SEPTEMBRIS. 
Examinatio loci d cum eBet prope 90 gradum carens quali parallaxi lon 
gitudinis. 
Debuit hoc die d eBe in 90 gradu 7 H 40 M A.M. 
Hora 7 M.57 cum luna faltem 17 fcrupulis temporis exceBiBet 90 gradum 
ideoque non multum perceptibilem caufaret parallaxin, vifus elt iplius 
limbus orientalis diftare a © in partibus aequatoris 71 8i 3. Cumque diame 
ter (l fuerit quali 30 quantum videbatur per vtraque cornua ratiocinando ex 
declinatione, erat femidiameter 15, quae in aequatore caufant 16. Erat ita 
que diftantia centri d a centro © in gradibus aequatoris 71 19, cumque decli 
natio © vifa eBet tunc temporis 1 57 borea, longitudo © vifa erat in 25 6 Ttp, 
fed potius ex ephemeridibus accipies locum © in 25 2 Ttp, cuius Afc. Redta 
elt 175 27 
hinc Ii auferatur diftantia d 71 19 
prouenit iplius Afcenlio Re6ta 104 8, cumque circa idem tempus obfer- 
uationis fuperius cornu haberet declinationem 17 42, inferius 17 14, erat 
declinatio centri d intermedia 17 28. Ergo ex data Afcenlione Redta d 104 B 
8' & declinatione eius vifa 17 28 datur ex noftris tabulis Long. 6$ 13 31 & 
vna datur Lat. vifa d 5 23. Calculus Maeftlini praebet Longit. d 13 28 non 
habita ratione aequationis temporis, id quod infenlibiliter a vero deuiat. 
(Nota, non re6te capiebatur locus Solis vifus ex declinatione vifa, ideo 
repete 1 ). Ephemerides Cypriani dant Long. 13 17, quod Ii aequatio tempo 
ris vtrobique adhiberetur adhuc minus fieret in d loco. 
Latitudo d vtrobique eft 4 B 32'M. 
Latitudo vifa 5 23 
Parallaxis latitudinis 51. 
DIE 10 SEPTEMBRIS. 
Examinatio loci d ex his obferuationibus quando erat in 90 gradu Eclip 
ticae ab horizonte, id quod eueniebat H. lOiante Meridiem. 
Diftabat autem tunc in eodem momento per obferuationem eius limbus 
orientalis a centro © in gradibus aequatoris 42 B 10', quare centrum © in ijs- 
dem 42 25, declinatio vifa centri colligitur 11 0, habito refpedtu anteceden 
tium et feq. Haec dantur per obferuationem in d • In Sole vero ex declina 
tione vifa iplius circa horam 11, P.l M. 7\ datur locus eius in 27 10 ttp, fed 
fequendo Ephemerides noftras erat tunc © Long. 27 B 6', atque hac vtemur 
potius vt prius. Ergo Afc. redta © dabitur 177 21 & ob id Afc. redta centri 
1 Poftea adfcriptum.
	        
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