Virtual (Discussion) Panelists

Proposals reviewed by the Virtual panels are subject to a two-stage review process: 1) preliminary grading; and 2) the review meeting.

Virtual panelists will read and grade all proposals that they are assigned, and write feedback comments for a subset of those. They also advise their Panel Chair and Vice Chair on a subset of the Large, Treasury and Legacy proposals assigned for review to the Executive Committee.


Prep Work & General Info

Preliminary GradingPre-MeetingDiscussion MeetingPost-Meeting
Before April 8, 2022.April 8 - May 13, 2022May 17-31, 2022June 1-3, 2022June 4-7, 2022
Before getting started, familiarise yourself with the review process, Hubble and its instruments, the types of proposals you will be reviewing, and who to ask for help!

During this phase, you will:

  • Be assigned as Primary Reviewer, Secondary Reviewer or Grader for a subset of the proposals assigned to your panel.
  • Read all of your assigned proposals.
  • Enter numerical scores as preliminary grades for all of your assigned proposals.

Each proposal will receive 6 grades. STScI will use the grades to rank and triage the panel so that only the top proposals are discussed in the panel meeting.

During this phase, you will:

  • Prepare for the panel meeting.
  • Review all proposals listed for discussion, especially those you did not read for preliminary grading.
  • Consider whether you wish to raise a triaged proposal for discussion.

We strongly encourage you to use the SPIRIT tool to enter notes summarizing the strengths and weaknesses for your primary/secondary assignments.


The panel meets for 3 days. During this phase, you will:

  • Discuss proposals in turn and enter numerical scores as grades after each discussion.
  • Assess the final ranking of proposals for science balance.
  • Discuss (but not grade) a subset of Large, Treasury and Legacy programs to provide feedback to your panel Chair and Vice Chair.

During this phase, you will:

  • Write comments for every primary assignment (including triaged proposals).
  • Assist the primary reviewer with comments for every secondary assignment.

Please remember to remove review materials from your computer after the review.

Learn more about:

Learn more about:

Useful topics from previous phases:

Learn more about:

Useful topics from previous phases:

Learn more about:

Useful topics from previous phases:


Learn more about:

Useful topics from previous phases:


Important Dates and Deadlines:

  • Friday March 25: HST proposal deadline

Important Dates and Deadlines:

  • Friday April 8: SPG to release proposals and assignments
  • Tuesday April 12, 12pm-2pm EDT: Virtual Panelists Orientation
  • Friday April 15: Deadline for additional conflicts of interest
  • Friday May 13: Deadline for preliminary grades

Important Dates and Deadlines:

  • Tuesday May 17: SPG to release lists of which proposals will be discussed by the panels

Important Dates and Deadlines:

  • Wednesday June 1, 10am-4pm EDT: Meeting Day 1
  • Thursday June 2, 10am-4pm EDT: Meeting Day 2
  • Friday June 3, 10am-4pm EDT: Meeting Day 3

Important Dates and Deadlines:

  • Tuesday June 7: Deadline for Virtual proposal comments
  • Friday June 10: Deadline for EC sign-off of Virtual comments
  • Friday June 17: STScI releases Cycle 30 Science Program.