Dear Observer,

These notes are intended to guide you through the night on INT when there is no Telescope Operator present.
The document consist of two parts:

• INT/IDS Operation manual
  - which includes the opening and closing of the dome, filling cryostats, initializing telescope systems, common observing procedures and the logging and archiving of data.

• Troubleshooter
  - which gives solutions on the most common problems that can appear during the night.

For further references, please consult the IDS Instrument page.

While at the observatory, your points of contact are the following:

Duty Engineer	Tel:522	Intercom:F79	mobil:616974513
WHT Control Room	Tel:559	Intercom:68
JKT Control Room	Tel:585	Intercom:50
Extended Phonelist

In case you encounter problems that you cannot resolve, the Duty Engineer should be your first point of contact until 23:00. Afterwards, the WHT Telescope Operator will assist you by phone and decide whether the Engineer needs to be called up.

Please do not forget to fill out the nightlog at the end of each night, and the feedback form at the end of the run.