OPHASTA

OPHASTA is the parameter for OPTMODE=HAS that sets the reference station at which hour angles are calculated. It is usually best to choose a station in the middle of the array, such as Pie Town (VLBA_PT or PT) for the VLBA.

See the discussion of the possible optimization modes in the section on OPTMODE for more information on OPTMODE=HAS

• Argument: A station name or station code matching a scheduled station.
• Options: Any valid station in the schedule
• Default: PT
• Usage: Uses the one value for the experiment - the last specified.
• Example: OPHASTA = VLBA_LA