118 
RESEARCHES IN STELLAR PHOTOMETRY. 
Table 72.—Comparison Stars for S Cygni (in Order of Right Ascension). 
Star. 
Coordinates from Variables. 
Light 
Scale, 
Steps. 
Magnitude. 
R. A. 
Dec. 
Measured. 
From Curve. 
H. 
P. 
H. 
P. 
c 
H 
-990 
s 
-124.4 
// 
— 624 
39-7 
8-54 
8.79 
e 
-551 
-68.9 
4-105 
36.9 
9-39 
9.64 
a* 
— 422 
-52.6 
-1342 
45 -i 
7-53 
7.78 
i 
- 194 
— 24.2 
- 152 
32.1 
9.87 
10.12 
.... 
a 
— 109 
- 13-4 
4 - 72 
8-3 
13-90 
14 - T 5 
.... 
y 
- 74 
- 9-3 
4 - 52 
16.4 
12.31 
12.56 
m' 
- 45 
- 5-6 
4-455 
. • . • 
.... 
0 
- 41 
- 5 -i 
+ SO 
0.3 
14.94 
I 5 -I 9 
5 
- 39 
- 4-4 
- 4 
-0.5 
I 5-48 
15-73 
15.66 
I 5 - 9 I 
X 
— 22 
— 2.8 
-165 
19.0 
n -95 
12.20 
d 
+ 3 
+ 0.3 
4 - 45 
38.0 
8.98 
9-23 
V 
+ 8 
+ 1.0 
4 - 59 
4.8 
14-63 
14.88 
y 
+ 21 
-f 2.6 
- 114 
4.6 
14-34 
14-59 
P 
+ 35 
+ 4.4 
— 170 
21.8 
.... 
n -43 
oc 
m 
+ 49 
+ 6.1 
4-461 
24.1 
10.73 
10.98 
.... 
V 
+ 82 
+ 10.3 
- 94 
.... 
.... 
.... 
0 
+ 98 
4-12.3 
4 ~ 168 
22.0 
11.32 
H -57 
.... 
n 
+100 
4-12.5 
4-445 
23.6 
11. 12 
H -37 
1 
+ 105 
4 - 13 -1 
— 100 
25-7 
10.53 
10.78 
.... 
t 
+ 105 
4 -13-1 
4 - 45 
10.6 
12.8± 
13-1 ± 
i 3 - 5 ± 
1 3 • 7 i 
T 
+ 125 
4 -156 
-230 
.... 
8.86 
9. 11 
.... 
k 
+162 
4-20.3 
-347 
28.7 
.... 
.... 
10.20 
10.45 
g 
+ 400 
4-50.0 
-314 
33-2 
.... 
9-59 
9.84 
*a = c of Table 71. 
Table 73.— 7220 S Cygni. Photometer Measures of Comparison Stars. 
1904 September 3. 
6-INCH. 
Good. 
Sidereal 
Time. 
Zen- 
Dist- 
Star. 
Scale Readings. 
Mean Scale Readings. 
C. 
Magnitude. 
Mean of 3. 
Mean of 6- 
H. 
P 
h 
m 
O 
21 
0 
19 
B 
10. 
0 
9 - 
7 
9 - 
8 
9 
83 
10 
17 
0 
30 
7 
23 
7 
48 
C 
12. 
2 
11. 
7 
11. 
5 
11 
80 
12 
02 
0 
51 
7 
44 
7 
69 
c 
20. 
2 
20. 
0 
20. 
2 
20. 
13 
20 
88 
I 
69 
8 
62 
8 
87 
e 
24 
9 
25 
6 
25 
3 
25 
27 
26 
90 
2 
39 
9 
32 
9 
57 
f 
30 
8 
29 
9 
30 
3 
30 
33 
30 
67 
2 
77 
9 
70 
9 
95 
d 
24 
2 
24 
3 
24 
4 
24 
30 
24 
80 
2 
12 
9 
05 
9 
30 
T 
24 
0 
24 
5 
23 
9 
24 
13 
25 
00 
2 
13 
9 
05 
9 
3 i 
D 
11 
7 
10 
8 
10 
9 
11 
13 
11 
17 
0 
40 
7 
33 
7 
58 
D 
11 
2 
I I 
2 
11 
2 
I I 
20 
. . 
. . 
T 
26 
2 
25 
3 
26 
1 
25 
87 
. . 
. . 
d 
25 
•3 
25 
4 
25 
2 
25 
30 
/ 
31 
0 
3 i 
0 
31 
0 
3 i 
00 
e 
28 
7 
28 
3 
28 
6 
28 
53 
. . 
c 
22 
I 
21 
8 
21 
0 
21 
63 
. . 
. • 
C 
12 
7 
12 
•5 
11 
•5 
12 
23 
• • 
21 
21 
21 
B 
10 
.0 
10 
8 
10 
7 
10 
50 
• * 
• • 
