PDS_VERSION_ID                 = PDS3                                         
                                                                              
OBJECT     = INSTRUMENT_HOST                                                  
INSTRUMENT_HOST_ID             = ESO                                          
                                                                              
OBJECT     = INSTRUMENT_HOST_INFORMATION                                      
INSTRUMENT_HOST_NAME           = "SL9 EARTH-BASED OBSERVATORIES"              
INSTRUMENT_HOST_TYPE           = "EARTH BASED"                                
INSTRUMENT_HOST_DESC           =                                              
"                                                                             
The ground-based observations for the SL9 campaign were supplied by           
groups using many supporting astronomical observatories.   Listed             
below are the separate telescopes with appropriate observational              
parameters for which data were submitted.                                     
                                                                              
European Southern Observatory                                                 
New Technology Telescope                                                      
Nasmyth focus, image derotator, multiple feed                                 
SUSI (imager) 0.13 arcsec in the focal plane of the NTT                       
SUSI imaging capabilities complement well those of EMMI on the other focus.   
While EMMI provides, besides the various spectroscopic options, large-field   
capabilities (up to 10 x 10 arcmin with a 2048**2 CCD), imaging at SUSI is    
limited to a 2.2 x 2.2 arcmin field  during periods of excellent seeing.      
The IRSPEC at the NTT was upgraded at the beginning of the 1991 season by     
replacing its linear detector with a 2D SBRC 58x62 pixel InSb array which     
exhibits good cosmetic quality and high quantum efficiency from 1 to 5 micron 
with resolving powers of 1000 to 5000 for a nominal slit length of 2 arcmin.  
The instrument is attached permamently to one of the Nasmyth foci of the NTT. 
"                                                                             
END_OBJECT = INSTRUMENT_HOST_INFORMATION                                      
                                                                              
OBJECT     = INSTRUMENT_HOST_REFERENCE_INFO                                   
REFERENCE_KEY_ID               = "N/A"                                        
END_OBJECT = INSTRUMENT_HOST_REFERENCE_INFO                                   
                                                                              
END_OBJECT = INSTRUMENT_HOST                                                  
END