The even numbered ESSA satellites are equipped to transmit APT 

 pictures to comparatively inexpensive facsimile receivers on the 

 ground. The picture quality of these receivers, while well suited 

 for meteorological work, is usually too poor for oceanographic use. 

 Hence, for historical oceanographic studies only the AVCS is of 

 interest, since the AVCS covers the same area as the APT with better 

 resolution. 



NIMBUS 

 SPACECRAFT 

 FIRST ORBIT 



SUN RAYS 

 FIRST ORBIT 



y NIMBUS 

 '^SPACECRAFT 

 SECOND ORBIT 



SUN RAYS 

 SECOND ORBIT 



Figure 15 



Nimbus 2 AVCS camera coverage 



27 



