Time Table. 
OF THE SUN OBSERVED AT CAROLINE ISLAND, 1883 
129 
Photoheliograplis. 
X 
Corona 
camera. 
Expose 
1 sec. 
Expose 
20 secs. 
M 
Large photo- 
lieliograpli. 
Expose 
Equatorial. 
D 
Den.se prism. 
Quarter-incli 
slide. 
Expose 
Expose 
Expose 
Pjxpose 
Expose 
Expose 
Expose 
Expose 
Expose 
C 
Grating. 
1. 
Blue, 
2nd order. 
Expose 
Expose 
Expose 
Red, 
1st order. 
1 
Expose 
Expose 
Run 
j inch 
Expose 
B 
7 prisms. 
Expose 
Expose 
Expose 
i 
I Siderostat. 
G 
Slit 
spectroscope. 
2 prisms. 
1 
' Expose 
1 
H 
Prismatic 
camera. 
] 
Expose col. 
plate 
Shut 
K L 
Eowland grating. 
2nd order. 
Expose 
Expose 
Expose 
1st order. 
Expose 
Expose 
Expose 
On ^ 
Ref. spectrum 
30 secs. 
Expose and 
start clock 
j 
Time. 
d oi ai 
.3 o o 
C cc g ac 
OOOOIN.^ i—lO OOO OOOOO 
1— ^ CC C-'l H O Ci' 00 IN- iC CO 
CO oi 01 oi oi oi 03 oi 
MDCCCLXXXIX.-—A. 
S 
