PHOTOGRAPHIC RESEARCHES NEAR THE POLE OF THE HEAVENS 



65 



Approximate apparent Right Ascensions for Refractions 





Star 



Image 



243 



174 



347 



291 



Ima 



// 



243 



173 



348 

 190 

 291 



Ima 



239 



242 



o 



2 



172 



348 



Image 



Image 



Image 



47" 



233° 7'2l" 



231°49'45" 



52 



11 46 8 j 



10 59 55 



25 



239 36 48 



238 48 33 



21 



49 31 57 



49 54 33 



58 



45 12 31 



45 26 40 



19 



172 22 36 



172 48 24 



26 



164 14 



164 22 24 



24 



348 41 44 



348 22 34 



9 



189 61 47 



190 1 89 



25 



291 21 80 



290 59 55 



ready 



With these values of the right ascensions, and the values of it' n al- 



i 



refractions were computed by means of equations (5). The 



diurnal aberration was computed with 



last line, and the 



nute effect of the change in the sun's longitude was allowed for according to 

 equations (28). In this way the results are valid for the mean sidereal time 

 6 . The Table of General Data shows that this mean sidereal time was 



2'* 58" 53!5. 



The sums of the refraction and aberration corrections are given in the 

 following Table. 



Refraction, etc., Right Ascension, it sin l" (a 



o 



*H3.-M»T. CTp. 65 





2$ 



5 



