features solely by changes in ocean color. More missions are needed to 



answer the general question of how common these color boundaries are in 



the world ocean and more specific questions such as why do these color 



boundaries usually appear in photographs which also record what seems to 



be a convergence zone or roughness boundary, A satellite color sensor 



similar to the one discussed at the workshop could help answer these 



questions if it were utilized over the central portions of the ocean," 



Notes Added by Compiler: 



Note 1 



NASA photographs are available from; 



J. R. Dunlop, Inc. 

 2321 Uth Street N,E, 

 Washington, DC 20002 

 (202) 526-5000 



Give the photo number and spacecraft flight. The prices vary but are 



around $3.00 for a glossy print to $0.35 for a 35 mm slide. Super slides 



are around $3-00, Mr, Merrell gives the numbers of several good photographs. 



Note 2 , (Dec, 19, I969). 



AS6-2-IU95, AS6-2-IU96, AS6-2-I5OI, AS6-2-I502 



These photographs of the Atlantic Ocean were taken from the Apollo 6 



spacecraft, an unmanned, orbiting vehicle, on April h, I968, Solar time 



for each photograph was 1011, 1013, 1027, IO3O, respectively; spacecraft 



altitude was approximately I9O-I92 kilometers. The camera used was a 



J. A. Maurer, 70 mm. with a Kodak Ektar, 76 mm, f/2.8 focal length lens. 



17-3 



