CHAPTER II.—T ANDROMEDA. 
13 
in seconds of time. The fifth column gives the brightness of the star in steps of 
the light-scale, which result from the observations in Table 11, and will be 
explained in that connection. The last four columns give the magnitude, either 
“measured” with the photometer or read from the magnitude-curve (fig. 4). 
In each case the heading “H.” indicates the Harvard, and“P.” the Potsdam 
system. 1 The adopted values for stars measured with both 6- and 12-inch are 
taken from the 12-inch. 
Table 8.—103 T Andromeda. 
Photometer Measures of Comparison Stars. 
6INCH. 
1904 October 
15 - 
Fair to good, quiet, a little dull. 
Sidereal 
Time. 
Zen. 
Dist. 
Star. 
Scale Readings. 
Mean .Scale Readings. 
C. 
Magnitude. 
Mean of 3. 
Mean of 6. 
H. 
P. 
h 
m 
O 
1 
01 
20 
c 
26. 
7 
27 
3 
27 - 
1 
27 
03 
27 
62 
2 
4 i 
9 
22 
9 
30 
e 
38 . 
8 
39 
0 
38 . 
1 
38 
63 
37 
65 
3 
62 
10 
43 
10 
5 i 
b 
22 
6 
24 
2 
23 - 
0 
23 
27 
24 
42 
2 
07 
8 
88 
8 
96 
d 
24. 
2 
26 
2 
26. 
3 
25 
57 
25 
89 
2 
23 
9 
04 
9 
12 
a 
15 - 
7 
16 
3 
16 
4 
16 
13 
16 
55 
I 
16 
7 
97 
8 
05 
1 
34 - 
8 
35 
2 
36. 
0 
35 
33 
35 
72 
3 
42 
10 
23 
10 
3 i 
s 
36 . 
8 
36 
7 
36. 
3 
36 
60 
3 
52 
10 
33 
10 
4 i 
A 
13 - 
8 
14 
0 
13 
9 
13 
90 
14 
30 
0 
84 
7 
65 
7 
73 
B 
13 - 
1 
12 
2 
i 3 - 
2 
12 
83 
12 
98 
0 
63 
7 
44 
7 
52 
B 
12 
9 
13 
7 
12 
8 
13 
13 
A 
i 5 - 
1 
H 
0 
14. 
0 
14 
70 
. . * 
l 
36 . 
1 
35 
9 
36 . 
3 
36 
10 
a 
16. 
5 
17 
2 
17 - 
2 
16 
97 
d 
25 - 
3 
26 
4 
26 
9 
26 
20 
b 
25 - 
8 
25 
8 
25 
1 
25 
57 
e 
36. 
1 
37 
2 
36 
7 
36 
67 
1 
24 
22 
c 
28. 
3 
27 
8 
28 
5 
28 
20 
1904 October 
27. 
Fine, 
moon 
rising at end. 
21 
36 
37 
B 
9 
7 
10 
1 
9 
5 
9 
77 
10 
17 
0 
• 3 ° 
7 
49 
7 
57 
A 
11 
7 
11 
9 
11 
8 
11 
80 
11 
44 
0 
•44 
7 
63 
7 
7 i 
s 
32 
0 
3 i 
9 
3 i 
8 
3 i 
90 
2 
.92 
10 
11 
10 
19 
l 
32 
8 
33 
4 
33 
4 
33 
20 
32 
99 
3 
■05 
10 
24 
10 
32 
a 
13 
0 
14 
7 
14 
2 
13 
97 
!3 
84 
0 
.76 
7 
95 
8 
03 
d 
25 
1 
25 
8 
25 
0 
25 
30 
24 
49 
2 
. 08 
9 
27 
9 
35 
b 
21 
0 
21 
2 
21 
4 
21 
20 
20 
57 
1 
.66 
8 
85 
8 
93 
e 
30 
9 
3 i 
3 
32 
I 
3 i 
43 
3 i 
72 
2 
•89 
10 
08 
10 
16 
c 
24 
0 
25 
2 
25 
0 
24 
73 
25 
15 
2 
■ i 5 
9 
34 
9 
42 
c 
25 
5 
25 
•9 
25 
3 
25 
57 
e 
32 
5 
3 i 
6 
3 i 
9 
32 
00 
b 
19 
4 
20 
6 
19 
8 
19 
93 
d 
23 
2 
23 
•3 
24 
•5 
23 
67 
a 
14 
2 
13 
.6 
13 
3 
13 
70 
l 
32 
.0 
33 
•3 
33 
0 
32 
77 
A 
11 
2 
10 
■9 
11 
1 
11 
07 
21 
57 
34 
B 
9 
.8 
I I 
. 2 
10 
•7 
10 
57 
'The letters “H. C. O.” and “P. DM” indicate that the magnitudes are taken directly from the 
respective catalogues. The letters “H.” and “P.” indicate measurements by the writer, expressed in the 
corresponding systems. 
