WSWITCH

 

           WSWITCH [wthrow] [/PHASE t] [/TIME t1]
      Select  a  wobbler  switched  observation.   wthrow  selects  the
 wobbler  throw (that is the distance between the positive and negative
 beam) in arcseconds with a maximum of 240".  T is the time (in  s)  in
 each  phase, that is in each position of the wobbler (minimum 2 s), t1
 is the time of each subscan.  The wobbler throw is  in  azimuth.   For
 each  scan,  there  are  at  least  2 subscans, one with the secondary
 reflector  wobbling  between  the  source  position  and  a  reference
 position  wthrow  arcsecond  away  in  azimuth,  the  other  with  the
 secondary wobbling between a  reference  position  -wthrow  arcseconds
 away  in  azimuth and the source position, thus two symetric reference
 positions are used.