Table 101. 

 ATMOSPHERIC WATER-VAPOR LINES IN THE VISIBLE SPECTRUM. 



Wave lengths 

 in Angstroms. 



6480.285. 

 6480.4-6483.3 .. 



6483.468. 

 6483.6-6490 9. . . 



6491 015. 

 6493.1-6493 5... 



6494-725- 

 6496 082 . 

 6497.8-6514.5... 

 65I4-956. 

 6516 080 

 6516.750 

 6516.855 



65I7-3-65I9-4 • 

 6519.682. 



6522.1-6523.9..., 

 6524.080. 



6526.0-6530 8..., 

 6532.595- 

 6534- 1 72. 



6534.8-6542.6 . 

 6544.140 



6546.0-6547.9. ., 

 6548.855 

 6552865., 

 6554 025 . 

 6556.308 



6557-4-6558 4-..' 

 6560 800. , 



6563.7-6569.0.... 

 6572.3^0 

 6575-085 



65S0. 4-6929. 6. . . . 



6934-075 



6937 957-- 



6938 520 



6939 875 

 6940.436- 



Num- 

 ber of 

 lines. 



4 



11 



2 



Inten- 

 sity. 



1 



0000 



1 

 000 



1 

 00 



1 



2 

 00 



2 

 000 



1 



2 

 00 



1 

 0000 



1 

 000 



1 



2 

 000 



2 

 00 



1 



1 

 00 ? 



1 



o 



1? 

 00 



1 



1 

 000 



2 



2 



1 



2 



2 



Wave lengths 

 in Angstroms. 



6941. 

 6941 

 6942. 

 6942 

 6944 

 6947 

 6947 

 6949 

 6949 

 695 1 

 6953 

 6954.0-6955 

 6956 

 6956 



6959 

 6961 

 6964 

 6971 



6977 

 6981 



6985 

 6986 

 6988 

 6989 

 6990 

 6993 

 6994 

 6998 

 6999 

 7004 

 7004, 

 7005.3-7010 

 701 1 

 7016, 

 7016 

 7023. 

 7027, 

 7027, 



260. . , 



475- • 

 402. . . 

 630. . . 



060. . . 

 782.., 

 863... 

 240. . , 

 310... 

 010.. , 

 828. . , 



9 



660 \ 



746/ 

 704. . . 



515.. 



812... 



135.-- 

 715. ■ 

 722.. , 

 220. . , 



833-- 

 125. 

 237.., 

 632.., 

 776. . , 

 360. . , 

 978... 

 223.. . 

 575- ■ 

 995- • • 



590- 

 33o. 

 675- 

 77o. 

 213. 

 74o. 



Num- 

 ber of 

 lines. 



Inten- 

 sity. 



000 

 1 

 2 

 1 

 3 

 5 



00 

 1 

 1 

 1 

 1 



00 



4 

 1 



3 

 4 

 1 

 o 



3 

 1 

 o 



3 

 o 



3 

 1 

 2 

 1 

 o 

 2 

 o 



2 

 O 

 2 

 I 



3 

 2 

 o 



2 



Table 102. 

 ATMOSPHERIC WATER-VAPOR BANDS IN THE INFRA-RED SPECTRUM. 



Name of band. 



p 



<r . . . 



In* 

 In* 



*, ... 



Wave- 

 lengths. 



0.718 

 0.814 

 0.896 

 o-933 

 o.945 

 0.974 

 1. 119 



1 134 

 1. 172 



I-33I 

 I-45I 

 1.469 



Transmis- 

 sion coef- 

 ficient a. 



0.91 

 o 92 

 0.90 

 0.63 

 0.69 

 0.91 



054 

 0.60 

 o 92 



o 74 

 0.36 



o-55 



The infra-red ban-'s may perhaps be composed 

 of numerous fine lines which the holographic 

 apparatus does not separately distinguish. 



Wide bands of very great atmospheric water- 

 vapor absorption are found in the infra-red 

 spectrum as follows : 



Name. 



P<TT 



X.. 



Wave lengths. 



y. p. 



0.926-0.978 

 1. 095-1. 165 

 1.319-1.498 

 1. 762-1. 977 



2.520-2.845 



Absorption at 

 Washington. 



0.3 too. 5 

 0.5 too. 8 

 o 7 to 1 . o 

 0.9 to 1 .0 



See Vol. I, Annals Astrophysical Observatory, Smith- 

 sonian Institution. 



Smithsonian Tables. 



230 



