Observers INT and IDS Notes These notes are intended to guide the observer through the night when there is no Telescope Operator present. A Postscript version is available here. If you get stuck, these are your points of contact : Duty Engineer tel:522 intercom:F79 WHT Control Room tel:559 intercom:68 JKT Control Room tel:585 intercom:50 Click here for an extended phonelist Please remember to fill out Observing log at the end of each night Feedback form at the end of the run