NICER Mission Timeline


Current Activity

  • Please see Upcoming and recent past pointings for
    up-to-date NICER observation scheduling.


  • The phase 1 proposal deadline for Cycle 2 of
    NICER's Guest Observer program is:
    4:30 pm ET on Wednesday, November 13, 2019.




NICER Activities

Early Post-Launch NICER activities

  • July 13 Begin Science Program
  • June 21-July 12 Initial calibration and hardware commissioning
  • June 17 NICER uses Raster scan of Serpens X-1 to determine X-ray instrument and star tracker alignment
  • June 14 NICER is powered up, NICER is deployed, NICER range of motion is verified by robotic camera
  • June 12-13 NICER is installed on the ISS ELC2
  • June 11 2017 NICER is extracted from the Dragon trunk

Latest News

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