Indication
Condition
The GIC calculated Sun position was not aligned with actual telescope position.
If this occurs while the light path was not blocked then:
M1 Cover is forced to close
Aperture Cover is forced to close
Operator Procedure
Do not open the M1 Cover, if the aperture cover is open.
Technician
ChecklistProcedure
Ensure telescope safety encoders are communicating properly.
Ensure telescope safety encoders have been properly homed. Follow this procedure.
| Info |
|---|
The telescope safety encoders have to be re-homed after any loss of power or loss of communications. |
Engineering Procedure
Disable Telescope Ephemeris safety function
| Note |
|---|
Complete Job Hazard Analysis prior to disabling Telescope Ephemeris safety function. |
If necessary, disable Telescope Ephemeris safety function.
press:
indicator should change to:
