Principal: Chad Engelbracht
Deputy: Dean Hines, Dave Frayer, Susan Stolovy
Data Monkey(s): James Muzerolle, Kate Su
Priority: Desired
Downlink Priority: Normal
Analysis Time: 168 hrs
Last Updated:
This task images a red, featureless source that can be used to check the cross-calibration between MIPS IRS.
This task uses a standard photometry AOT at 24µm to observe a red, non-variable AGN with no PAH features observed previously with ISO SWS. The target will be Mrk 279, which is also being observed by IRS in their IOC task 191. The target is expected to be about 300 mJy at 24µm and thus it will be observed using our standard star AOR: 2 cycles of 3s DCEs. The target is observable from October 19, 2003, to June 14, 2004.
This AOR will generate 30 images of the target and should produce data similar to our standard-star observations. The AOR listed below takes 6 minutes to execute, much less than the 24 minutes allocated for this task.
Array Data Desired:
24 µm
Data Reformatting Option:
Special Instructions:
The analysis will be very similar to the routine 24µm calibration task, mips-920, except that we will not be measuring the flux conversion factor. The data should be calibrated and the measured flux at 24µm compared to the value measured by IRS.
Communicate the results to the IRS team (specifically, the leads of IRS IOC task 191) and the SSC Calibration Working Group. The blue (i.e., stars) and red (this task) cross-calibration between MIPS and IRS will be compared and a report communicated to the Calibration Working Group and the instrument P.I.s.
Check against spectral leak check data from MIPS 240. If no leak in MIPS 240, look at color correction and IRS calibration. Set caution flag for observers, and reobserve during routine calibration.