NASA Photo ID: S89-44172          File Name: 10063727.gif 
 
Film Type: 4x5 CN                 Date Taken: 09/11/89 
 
Title: STS-34 Shuttle Solar Backscatter UV (SSBUV) get away special (GAS) canisters 
 
Description: 
 
Shuttle Solar Backscatter Ultraviolet (UV) (SSBUV) get away special (GAS)  
canisters are mounted on a GAS adapter beam assembly (GABA) or gas bridge  
assembly (GBA) on the starboard wall of Atlantis', Orbiter Vehicle (OV)  
104's, payload bay (PLB).  The GAS canister on the left has a motorized 
door  assembly (MDA).  During STS-34, SSBUV instrument will calibrate 
similar ozone  measuring space-based instruments on the National Oceanic 
and Atmospheric  Administration's (NOAA's) TIROS satellites (NOAA-9 and 
NOAA-11).  SSBUV uses  the Space Shuttle's orbital flight path to assess 
instrument performance by  directly comparing data from identical 
instruments aboard TIROS spacecraft,  as the Shuttle and the satellite pass 
over the same Earth location within a  one hour window.  SSBUV is managed 
by Goddard Space Flight Center (GSFC).   SSBUV insignia are printed on the 
GAS thermal blanket coverings.