REM observing modes


REM programmed observations.

Please find in the programmes page the list of forthcoming REM observations.


REM observing modes

REM is a small size telescope (60cm diameter) and although with quite advanced technological solutions any observing program should be well fitted within the instrument capabilities. Plase look at more detailed informations concerning observing time request and allocation.

REM allows simultaneous optical (0.5 - 0.8 micron) and near-infrared (1.0 - 2.2 micron) observations automatically managed with fast pointing capability everywhere above 5 degrees on the local horizon.

Below there are the possible observing modes offered by the observatory:

  1. RRO Rapid Response Observation. REM is permanently liked to the GCN and IBAS networks to receive alerts from the Swift, Integral and Hete-2 satellites. Each time an alert is received REM stops any possible on-going observation and immediately goes to the new target beginning a sequence of pre-defined observations. Data for GRB alerts are property of the REM team, other high-energy transient data can be accessed upon an agreement with the REM team. It is possible to add new source of alerts but since this requires a modification of the REM Observing Software (REMOS) this has to be discussed with the REM team.
  2. RTOO Regular Target of Opportunity Observation. This mode is offered to general users. By means of an e-mail to a dedicated address (rem-too@eso.org) REM allocates the requested observation and executes it, if possible of course, as soon as the on-going observations are completed. This usually happens within a few minutes. This should be adequate for most of the programs. An e-mail with subject "REM_TOO_Help" gives you back instructions about how to request such a ToO.
  3. PM Periodical Monitoring. Observations can be requested for any target and with this mode the observations are performed periodically. This is not intended as a mode for precise timing (see below). Periodical monitoring means that the next observation is not executed before a specific amount of time (the periodicity).
  4. TO Timing Observations. It is possible to introduce in the system observations performed within a strict time-window for accurate synchronization.
  5. OSO One-Shot Observation. The simplest observation mode. The requested observations are allocated when the observability conditions are the best.

For each observing mode, excluding RRO, it is always possible to set constraints about the airmass, seeing, Moon distance, etc. It is also possible to group different observations together in order they are executed during the same night sequentially. This kind of observations ("grouped") can not yet be periodic. REM routinely observes (i.e. almost each night) standard stars available for each program. It is of course always possible to allocate standar stars for specific needs.