CHAPTER XI.—V DELPHINI. 
147 
Table 91. — Comparison Stars for V Delphini (in Order of Right Ascension). 
Table 92 gives the determination of the magnitude of the stars m', n', x, and 
based on the fundamental stars F, G, and K. No correction has been made 
for change of atmospheric absorption depending on difference of zenith distance 
between the fundamental and measured stars, as it amounted to only 0.002 mag. 
Table 92 also gives the measures of a, c, d, /, g, and /, with the 12-ineh and the 
fainter stars with the 40-inch. 
In Table 94 the separate results are collected and the mean magnitudes 
found. The residuals for each night’s measures are given in the column headed 
d, the mean values being— 
With the 6-ineh. ±0.08 
With the 12-inch. ±0.05 
With the 40-inch. ±0.12 
VISUAL COMPARISONS OF THE VARIABLE. 
Table 95 gives in detail the visual comparisons of the variable by Argelander’s 
method with the comparison stars thus determined. There are also included 
for comparison the photometric measures of the variable in observations Nos. 
112 and 115, and estimates from the photograph, Nos. 114 and 123. 
