Last updated: 2021-10-21
Opportunities to propose for NuSTAR observing time
The NuSTAR GO program
The total amount of time allocated to GO observations is 11.3 Ms (~70% of the total observing time per year) including up to 8.5 Ms of observing time awarded to selected NuSTAR GO program investigations. It is anticipated that approximately 80 investigations will be selected for implementation in each NuSTAR GO cycle.
Of the remaining time (~ 2.8 Ms):
- up to 1.5 Ms of NuSTAR observing time is expected to be awarded to joint NuSTAR/XMM-Newton proposals submitted to annual XMM-Newton Call for Proposals with proposals due in October each year. The list of accepted proposals for cycle-20 is available on the XMM-Newton OTAC results website.
- up to 500 ks of NuSTAR observing time for joint NuSTAR / Chandra observing projects submitted to the Chandra Call for Proposals. Note that an additional 500 ks may also be allocated for Chandra V/LP programs. See CXC website for cycle-23 peer review recommended programs. The annual proposal due date for Chandra proposal are usually in March
- up to 100 ks of NuSTAR observing time for joint NuSTAR / INTEGRAL observing proposals submitted to the INTEGRAL cycle-18 announcement of opportunity. The deadline for INTEGRAL AO-19 proposals is expected to be in April, 2021. A list of approved programmes for cycle-18 can be found on the INTEGRAL website.
- up to 300 ks of NuSTAR observing time for joint NuSTAR / Swift proposals is expected to be available in Swift cycle-18, with proposals due in September 2021.
- Note that as a service to the community, "snapshot" (1 - 2 ks) observations are performed by NASA’s Swift mission for most NuSTAR observations (including GO programs).
- up to 400 ks of NuSTAR observing time for joint NuSTAR / NICER proposals is expected to be available in NICER cycle-4, with proposals due in November, 2021. The list of accepted proposals for cycle-3 is available on the NICER GO website.
The remaining 30% of the observing time will be allocated through the NuSTAR project as follows:
- NuSTAR legacy survey observations (~ 3% of the total observing time)
- NuSTAR PI discretionary time, including unanticipated ToO observations open to the scientific community (~ 17%)
- Calibration observations, engineering tasks, and resolving operational issues (~ 10%).
Please see the NuSTAR HEASARC Page
for the latest information about NuSTAR
. We've also provided useful links on the left including links to the NuSTAR
observation constraint checker, the NuSTAR
simulation toolkits, and details of the approved NuSTAR legacy survey programs