A prefs.ccd file should be located in /usr/local/observatory/prefs on the
computer to which the camera is attached.  This file is read by the indi ccd
driver, or by xmccd1, to set local camera parameters. 

The software will use default parameters if the file is not present.

Parameters that will be read by prefs.ccd are --

ccd.frame_count_multi
  Sets the maximum number of frames in multi mode
  Default is 10
  Minimum is 2
  No maximum
  
ccd.filter_max
  Sets the number of filters in the filter wheel
  Should be less than or equal to the number of slots available  

ccd.filter_01 to ccd.filter_10 
  Labels for each filter in the wheel; limit to 16 characters, such as
  (1) I (725-1025)
  (2) R (570-690)
  
ccd.base_name
  Base for image file names
   
ccd.guide_flag
  1 to start with autoguiding enabled
  0 to start with autoguiding disabled
  
ccd.guide_log_flag
  1 to log autoguiding
  0 to disable autoguiding log

ccd.threshold 
  ADU threshold for a guide star
  
ccd.x2aox
  Scaling for pixel displacement in x to drive adaptive optical x
  
ccd.y2aox
  Scaling for pixel displacement in y to drive adaptive optical x

ccd.x2aoy
  Scaling for pixel displacement in x to drive adaptive optical y

ccd.y2aoy
  Scaling for pixel displacement in y to drive adaptive optical y

ccd.x2trackx
  Scaling for pixel displacement in x to drive track relay x

ccd.y2trackx
  Scaling for pixel displacement in y to drive track relay x

ccd.x2tracky
  Scaling for pixel displacement in x to drive track relay y

ccd.y2tracky
  Scaling for pixel displacement in y to drive track relay y



