Help with Conditions

This page displays the available observing condition constraints. A single constraint set may be tied globally to all observations or different constraint sets may be assigned to individual sessions.

Current constraints include scheduling information and information on the acceptable observing conditions. The precise definitions of the observing condition constraint have not yet been made, and this constraint is mainly intended for future use.

If this is a new proposal only "global default observing conditions" is shown in the list of constraint sets in the right-hand panel (see an example view). Expand the constraints tree in the left-hand panel and select the constraint set i.e. "global default". The right-hand panel then shows the four observing categories that define the poorest conditions under which a queue-mode observation should be executed (see an example view). Only the sky background category has any relevance for classical-mode observations. You can choose appropriate conditions for the program using the radio buttons. The translation between %-ile bins and physical parameters is given in the Gemini queue-observing web pages.

New constraint sets can be defined from the main constraints page using the create button. Choose the appropriate set of conditions and give the set a name for convenient future reference. As only one global constraint set can be active, creating a new set will deselect the global defaults set. To select the desired constraint set, click in the checkbox under the "selected?" column (see an example view).

Specific constraint sets can be applied to individual observations (see PIT Observations help pages; see an example view).

Removing a constraint from the current observation does not delete it. It is still available for other observations. However, a constraint set may be deleted via the delete button.