PDS_VERSION_ID                 = PDS3

LABEL_REVISION_NOTE            = "
  2014-10-15 SBN:Blankenship Initial version
  2015-04-16 SBN:T.Barnes formatting edits and added REFERENCE_KEY_ID"

OBJECT                         = INSTRUMENT
  INSTRUMENT_HOST_ID             = "BGONDOLA"
  INSTRUMENT_ID                  = "UVVISI"                                   
                                                                              
  OBJECT                         = INSTRUMENT_INFORMATION
    INSTRUMENT_NAME                = "ULTRAVIOLET AND VISIBLE IMAGING CAMERA"
    INSTRUMENT_TYPE                = "UV/VISIBLE IMAGING CAMERA"
    INSTRUMENT_DESC                = "

The UVVis instrument is the UV and Visible imaging instrument for the 
BRRISON and BOPPS missions. The UVVis instrument consists of two cameras; 
a Guide Camera and a Science Camera. Additionally, other components of the 
UVVis instrument include: a fold mirror, a filter wheel, a fine steering 
mirror, and various optical elements (three off-axis paraboloids, a 
dichroic, and baffles). The Guide Camera is an Andor Zyla 5.5 camera. The 
Science Camera is a Princeton Instruments ProEM+ CCD Camera.

The UVVis instrument was designed to meet two goals during the balloon 
flights. The first goal was to achieve a fine pointing capability. The 
error signal was found to be 10-20 mas at a cadence of 20 Hz. The 
corrections from the fine steering mirror were found to be the same angular 
level at a cadence of 5 Hz. The second goal was to observe celestial 
targets in four UV filters. Two filters were centered on OH and CN 
(~310 and ~385 nm) while the other two filters were at nearby continuum 
wavelengths.

The UVVis instrument sits on the proximal optical bench which is one of two 
optical benches behind the main telescope, while the BIRC sits on the distal 
optical bench. The main telescope is flight heritage technology and was used 
in the Stratospheric Terahertz Observatory (STO). The main telescope is an 
on-axis cassegrain with a diameter of 0.8 m and f/17.5. The main telescope 
brings the light to a prime focus at the UVVis optical bench. A two-position 
mirror mounted on the UVVis optical bench determines whether the light stays 
in the UVVis bench or is allowed to pass through a hole and continue to the 
IR optical bench.
"

  END_OBJECT = INSTRUMENT_INFORMATION                                         
  
  OBJECT                          = INSTRUMENT_REFERENCE_INFO                 
    REFERENCE_KEY_ID              = "N/A"                                     
  END_OBJECT                      = INSTRUMENT_REFERENCE_INFO                 

                                                                              
END_OBJECT = INSTRUMENT                                                       
                                                                              
END