While NuSTAR was initially approved by NASA as a 2-year Principal Investigator-led (PI-led) mission, NuSTAR has now been approved to continue operations through 2025 (subject to review by the 2025 NASA Astrophysics Senior Review of Operating Missions) and to have a dedicated Guest Observer (GO) Program. There are several opportunities for guest observers in the general scientific community to propose for NuSTAR observations.

Cycle 10 — June 1, 2024 through May 31, 2025

• Proposals were due on January 25, 2024


• Cycle 10 accepted targets


• Cycle 10 accepted program abstracts


• Guide for NuSTAR Cycle 10 proposers
  

Cycle 9 — June 1, 2023 through May 31, 2024

• Proposals were due on January 26, 2023


• Cycle 9 accepted targets


• Cycle 9 accepted program abstracts


• Guide for NuSTAR Cycle 9 proposers
  

Cycle 8 — June 1, 2022 through May 31, 2023

• Proposals were due on January 28, 2022


• Cycle 8 accepted targets


• Cycle 8 accepted program abstracts


• Guide for NuSTAR Cycle 8 proposers
  

Cycle 7 — June 1, 2021 through May 31, 2022

• Proposals were due on January 29, 2021


• Cycle 7 accepted targets


• Cycle 7 accepted program abstracts


• Guide for NuSTAR Cycle 7 proposers
  

Cycle 6 — June 1, 2020 through May 31, 2021

• Proposals were due on January 24, 2020


• Cycle 6 accepted targets


• Cycle 6 accepted program abstracts


• Guide for NuSTAR Cycle 6 proposers
  

Cycle 5 — July 1, 2019 through May 31, 2020

• Proposals were due on March 29, 2019


• Cycle 5 accepted targets


• Cycle 5 accepted program abstracts


• Guide for NuSTAR Cycle 5 proposers
  

Cycle 4 — June 1, 2018 through June 30, 2019

• Proposals were due on January 19, 2018


• Cycle 4 accepted targets


• Cycle 4 accepted program abstracts


• Guide for NuSTAR Cycle 4 proposers

Cycle 3 — June 1, 2017 through May 31, 2018

• Proposals were due on January 27, 2017


• Cycle 3 accepted targets


• Cycle 3 observations abstracts


• Guide for NuSTAR Cycle 3 proposers

Cycle 2 — May 1, 2016 through May 31, 2017

• Proposals were due on December 11, 2015


• Cycle 2 accepted targets


• Cycle 2 observations abstracts


• Guide for NuSTAR Cycle 2 proposers

Cycle 1 — April 1, 2015 through April 30, 2016

• Proposals were due in November 2014


• Cycle 1 accepted targets


• Cycle 1 observations abstracts


• Guide for NuSTAR Cycle 1 proposers