For Proposers
Last updated: 2023-09-18
Opportunities to propose for NuSTAR observing time
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Gehrels-Swift cycle-20
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Up to 300 ks of NuSTAR observing time is available.
Proposal due date: September 21st, 2023 1630 EDT
for observations beginning April, 2024
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INTEGRAL cycle-21
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Up to 100 ks of NuSTAR observing time is available.
Proposal due date: September 29th, 2023 1400 CEST
for observations beginning January, 2024
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XMM-Newton cycle-23
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Up to 1500 ks of NuSTAR observing time is available.
Proposal due date: October 6th, 2023 1200 UT
for observations beginning May, 2024
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NuSTAR cycle-10
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Up to 6500 ks of NuSTAR observing time for standard proposals (< 500 ks) and 2000 ks of NuSTAR observing time for large proposals (> 500 ks) is available.
Joint observing time is available for XMM-Newton (up to 1500 ks), Gehrels-Swift (up to 300 ks), and NICER (up to 250 ks) is also available in the NuSTAR AO program.
Proposal due date: late-January, 2024
for observations beginning June, 2024
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Chandra cycle-26
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Up to 500 ks of NuSTAR observing time is available.
Proposal due date: mid-March, 2024
for observations beginning January, 2025
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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-22 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-24 peer review recommended programs. The annual due date for Chandra proposals is usually in March.
- up to 100 ks of NuSTAR observing time for joint NuSTAR / INTEGRAL observing proposals submitted to the INTEGRAL cycle-20 announcement of opportunity .The deadline for INTEGRAL AO-20 proposals is expected in April each year. A list of approved programmes for cycle-19 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-20, with proposals due in September 2023. A list of proposals selected for cycle-19 is available on the Swift website.
- 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-6, with proposals due in September, 2023. The list of accepted proposals for cycle-5 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.
