Table 1 08. 



ATMOSPHERIC WATER-VAPOR LINES IN THE VISIBLE SPECTRUM. 



Wave lengths 

 in Angstroms 



6480 

 6483 

 6483 

 6490 

 6492 

 6494 

 6495 

 6497 

 6514 

 6515 

 6516 

 6516 

 6517 

 6519 

 6521 



6523 

 6525 

 6532 

 6533 

 6534 

 6543 

 6545 

 6548 

 6552 

 6553 

 6560 

 6561 

 6572 

 6573 

 6574 

 6576 

 6929 

 6933 

 6937 

 6938 



6939 

 6940 



3 -6483-1 



252 



5 -6490.7 , 



9 -6493-3 ■ 



510 



864 



6 -6514.3. 

 737 



527 



632 



I -6519.2. 



9 -6523.7. 



855 



8 -6530.6. 



369 



949 



6 -6542.3. 



912 



8 -6547.7. 



627 



636 



8 -6558.2. 



570 



I -6571.0. 

 099 



Num- 

 ber of 

 lines 



II 

 2 



854 



4 -6643.9 



832. 

 716. 

 271. 

 6^0. 

 198. 



Inten- 

 sity 



22 

 I 



Wave lengths 

 in Angstroms 



6941.0 



6941-234 



6942.163 



6942.387 



6943-815 



6947-552 



6947-6 



6948.997 



6949.067 



6950-77 'r 



6953-586 



6953.8 -6955.7, 



6956-416 



6956.502 



6959.467 



6961.275 



6964-564 



6970-9 



6977-487 



6981.474 



6984-9 



6986.592 



6987-9 



6989.001 



6990.391 



6993-535 



6994-124 



•7 



.981 



7004.3 



7004.766 



7005.1 -7009.9. 



7011-342 



7016.452 



7023.517 



7027.0 



7027-491 



Num- 

 ber of 

 lines 



Inten- 

 sity 



Table 1 09. 

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



Name of band 



p 



(T . . . 

 T . . . . 



<^1. . . 



in ^ 

 In ^I' 

 ^1. . 



Wave- 

 lengths 



M 

 0.718 

 0.814 

 0.896 

 0.933 

 0.945 

 0.974 

 1. 119 



I-I34 

 1. 1 72 



I -33 1 

 1-45' 

 1.469 



Transmis- 

 sion coef- 

 ficient a 



0.91 

 0.92 

 0.90 

 0.63 

 0.69 

 0.91 



0.54 

 0.60 

 0.92 

 0.74 

 0.36 

 0.55 



The infra-red bands may perhaps be composed 

 of numerous fine lines which the bolographic 

 apparatus does not separately distinguish. 



Wide bands of very great atmospheric water- 

 vapor absorption are found in the infra-red 

 spectrum as follows: 



Name 



par 



^. . 



V. 



X. 



Wave lengths 



0.926-0.978 

 1. 095-1. 1 65 

 1. 3 1 9-1. 498 

 I. 762-1.977 

 2.520-2.845 



Absorption at 

 Washington 



0.3 to 0.5 

 0.5 to 0.8 

 0.7 to i.o 

 0.9 to 1.0 



^•°\ C0.2 / 



See \'ol. I, Annals Astrophysical Observatory, 

 Smithsonian Institution. 



Smithsonian Tables 



138 



