192 
researches in stellar photometry 
Table 119. Limit op Vision. —Continued. 
12 -INCH, OCULAR 67 . 
Field. 
Date. 
Estimate 
Magnitude H. 
Reduction. 
Corrected Magnitude. 
Star. 
Limit. 
Z. 
Cor. 
H. 
P. 
y 
m 
d 
RV Herculis .... 
04 
8 
11 
4 <a 
13 - 3 ° 
13.86 
26° 
.02 
13.88 
I 4 -J 3 
OCULAR 80 . 
W Andromedae... . 
03 
10 
13 
2 
13-34 
13 34 
70 
•45 
13-79 
14.20 
Z Cassiopeiae. 
00 
2 
25 
4<k 
12.99 
13-55 
48 
. 11 
13.66 
13-55 
Z Cassiopeiae. 
00 
2 
25 
1 <x 
1338 
I 3-52 
48 
. 11 
i 3- 6 3 
I 3-52 
Mean. 
13.69 
13-74 
OCULAR 275 . 
V Andromedae ... 
98 
7 
25 
C 
13.82 
13.82 
46 
.09 
i 3 - 9 i 
14.20 
R Comae. 
00 
4 
4 
r 
14.17 
14.17 
34 
.04 
14.26 
14.56 
R Comae. 
00 
4 
4 
1 <fi 
14.08 
14.22 
34 
.04 
14.26 
14.56 
RU Herculis. 
00 
3 
7 
w' 
14.68 
14.68 
40 
.06 
14.74 
15.01 
RU Herculis. 
00 
4 
4 
w' 
14.68 
14.68 
22 
.01 
14.69 
14.96 
RV Herculis .... 
00 
4 
4 
,3 
14-75 
14-75 
20 
.01 
14.76 
15.01 
RV Herculis. 
00 
4 
4 
-n 
14.26 
14.26 
20 
.01 
14.27 
14-52 
S I.yrae. 
00 
4 
4 
8-10 <2 
12.82 
14.10 
41 
07 
14.17 
14-59 
S Lyrae . 
00 
4 
4 
a 
14.01 
14.01 
4 i 
•07 
14.08 
14.50 
V Delphini. 
01 
11 
1 
3<y 
i 3 - 5 o 
13.92 
5 i 
•13 
14.05 
14-31 
V Delphini. 
01 
11 
1 
U) 
13-73 
13-73 
5 i 
•13 
13.86 
14. T2 
Mean. 
14.27 
14-57 
--*- 
40 -INCH, OCULAR 237 . 
V Delphini. 
02 
4 
12 
4 <L 4 
16.2 
16.7 
62 
.06 
16.8 
17.2 
V Delphini. 
02 
4 
12 
2 -3 <71 
15-2 
15.6 
62 
.06 
15.6 
15-8 
Mean . ... 
16.2 
16. s 
OCULAR 350 . 
RV Herculis .. .. 
02 
2 
5 
6<k 
15-50 
16.25 
5 i 
•13 
16.38 
16.63 
OCULAR 450 . 
V Delphini. 
00 
10 
16 
i M </« 
* 5-3 
16. X 
34 
.04 
16.3 
16.6 
S Cygni . 
05 
11 
18 
5-6 <o 
15.48 
16.25 
16 
.00 
16.25 
16.50 
% 
OCULAR 750 . 
V Delphini. 
00 
8 
29 
A 
162 
16.7 
5 i 
13 
16.8 
17.1 
