NuSTAR For Astronomers: For Proposers
Below are links to useful technical information regarding NuSTAR for people proposing for joint NuSTAR-XMM observations through XMM-Newton AO-13. NuSTAR is currently in its baseline mission period, where the observing program is planned by the NuSTAR Science Team. To allow broader community access and make optimal use of the power of joint XMM-NuSTAR observations, the NuSTAR PI is allocating NuSTAR time for joint proposals. Observations proposed for targets that are already part of the NuSTAR baseline mission must achieve science not possible with the planned observations. The list of baseline mission targets is available from the "NuSTAR Targets" tab to the left. The exclusive use period for NuSTAR data obtained through the XMM-Newton AO is currently under review by NASA. The NuSTAR team will request that XMM and NuSTAR exclusive use periods coincide. However, it is possible that the NuSTAR data will be publicly released on a shorter timescale.
Finally, note that because NuSTAR is currently in its baseline, PI-led mission phase, with no funded Guest Investigator (GI) program, NuSTAR does not currently have a Help Desk.
- Target Visibility: The Target Visibility checker allows input of RA and Dec coordinates of a source and finds times when it is visible to NuSTAR subject to viewing constraints: [link to Target Constraint Checker]
- Straylight: Extremely bright X-ray sources (>100 mCrab in the 3-79 keV band) within 1 to 5 degrees of a target can cause issues with elevated backgrounds due to straylight.
- Deadtime: NuSTAR has a triggered readout, similar to a proportional counter but unlike a CCD, so it does not suffer from pileup effects. However, dead time becomes significant for sources above ~50 cps, and this must be factored into integration time estimates. Quantitative estimates of the effect of deadtime on exposure estimates can be found at the following link: [link to Deadtime Memo]
- Simulations: Information on the NuSTAR response and background, useful for simulating NuSTAR observations, are available here: [Simulations]
- Software Guide: The NuSTAR Software Guide will be available through the NuSTAR Guest Observatory Facility webpage at HEASARC: [link to HEASARC NuSTAR Analysis page]