The Dominion Astrophysical Observatory (DAO)

Safety Procedures

This page provides a summary of safety procedures astronomers and staff members must follow when operating the DAO telescopes. If you have not previously received training in any of the procedures outlined below you must request it from a member of the DAO telescope support staff. Since HIA staff are responsible for the safety of the telescope users your failure to follow any of these safety procedures may result in the loss of your observing privileges. Any accidents involving personnel or equipment should be reported immediately to Telescope or HIA Site Staff.

Observing in Marginal Weather Conditions

Please do NOT observe when the wind speed or relative humidity are above the limits indicated on the DAO Weather Strip. (Note that if there has been a previous power outage this page may no longer be updating automatically!) The relatively low wind threshold of 50 km/hr is not based on the risk of physical damage to the telescope structures but rather on the risk of power loss to the entire site because of debris falling from trees on to power lines at our heavily forested site. The domes can not be closed easily without power! Wind shake also makes any attempt to observe in high winds very inefficient and not worth the risk of possibly leaving a telescope exposed to the elements for an extended period of time.

Emergency Assistance Call System for Medical, Fire, and Police Emergencies

Restricted Use of the Passenger Elevator in the 1.8-m Dome

Refilling the SITe-2 CCD Dewar with Liquid Nitrogen (LN2)

DAO telescope users are requested to acknowledge the use of the DAO facilities in their publications.
The preferred form is a footnote to the author's byline, such as:
*Guest investigator, Dominion Astrophysical Observatory, Herzberg Institute of Astrophysics,
National Research Council of Canada.