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I want to do an observation longer then 24 hours.
Posted by Elena Scire on 19 January 2011 01:44 PM

Do you have a really good reason for wanting to do this? We do allow observations longer then 24 hours if scientifically justified, but we really do prefer shorter observations in order to do spacecraft calibrations on a routine schedule.

The maximum duration for warm IRAC AORs is 24 hours, and IERs are required for observations longer than 24 hours.

All observations longer then 24 hours are submitted to us as AORs. We use the AORs to plan, and then we make the IERs for the observations. If you find you have an observation that will need be longer then 24 hours, just submit AORs (i.e. for a 28-hour observation, make a 24-hour AOR chained to a 4-hour AOR) and make a note in the proposal that they will need to be converted to IERs, and we'll take it from there.

If you are planning exoplanet or high precision relative photometry observations, please see this this section of the proposal kit.