6 4 
researches in stellar photometry. 
Table 37.—4315 R Comas. Constants for Reduction and Comparison with Catalogue 
Magnitudes. 
6-INCH. 
Star. 
1904 July 4. 
1904 July 9. 
1905 January 12. 
C. 
Obs. Mag. 
J Mag. 
C. 
Obs. Mag. 
J Mag. 
C. 
Obs. Mag. 
J Mag. 
H. 
P. 
H. 
P. 
H. 
P. 
H. 
P. 
H. 
P. 
H. 
P. 
A. .. 
B. .. 
F.. .. 
0.83 
-0.37 
0.42 
7.98 
6.78 
7-57 
8.28 
7.08 
7.87 
4- . 22 
- ■ i 3 
- 07 
+ • 12 
+ .04 
- • i« 
0.92 
005 
0.75 
7-79 
6.92 
7.62 
8.09 
7.22 
7.92 
+ .03 
+ .01 
— .02 
- .07 
+ .18 
— . 10 
1 33 
0.18 
1 .12 
7.89 
6.74 
7.68 
8.19 
7.04 
7.98 
+ • 13 
- 17 
+ -04 
+ 03 
. 00 
- .04 
Means.. 
M 0 . 
0.29 
7-44 
7-15 
7-74 
7-45 
± • 14 
± • ic 
0.57 
7-44 
6.87 
7-74 
7 -i 7 
± .02 
± . 12 
0.88 
7-44 
6.56 
7.74 
6.86 
dfc.n 
± .02 
12-INCH. 
40 -INCH. 
Star. 
Mag. 
6-inch. 
C. 
Star. 
Mag. 
12-inch. 
C. 
Feb. 3. 
Feb. 27. 
Mar. 3. 
Mar. 5. 
Apr. 1. 
Apr. 4. 
a . 
R . 
U . 
1 u . 
Mean C . . . 
Mean Mag. 
M 0 . 
9.11 
9-35 
9 58 
10.10 
1.02 
1.07 
i -77 
2.16 
1.26 
1 • 55 
2.00 
2.38 
1.23 
1.09 
1.79 
2.14 
b . 
c . 
d . 
/ . 
Mean C .... 
Mean Mag.. 
M 0 . 
12.29 
12.43 
10.67 
10.57 
2.38 
2-35 
1 • 25 
1.19 
2.00 
2.20 
0.89 
0.62 
2.76 
2.81 
1 • 35 
1.16 
9-54 
1 - 5 i 
9-54 
8.03 
1.80 
9-54 
7-74 
1.56 
9-54 
7.98 
11.49 
1.79 
11.49 
9.70 
i -43 
11.49 
10.06 
2.02 
n.49 
9 47 
magnitude 
Fig. 13.— Magnitude-Curve for R Com,®. 
