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Call for Proposals 2024B

Mar 12, 2024

Deadline: 18 April 2024 at 23:59 UTC.

Semester dates: 1 August 2024 - 31 January 2025.

Available telescopes and instruments:

In the 2024B semester, we estimate that approximately 50, 500, and 1000 hours will be available on the 2m, 1m, and 0.4m telescopes, respectively.

For more information on LCO resources, check the links above or the links on the Observatory Information page.

For the 2024B semester, authors have the opportunity to submit long-term proposals. If a long-term proposal is ranked highly by the Review Committee, it may be awarded time for three consecutive semesters (2024B-2025B), at the discretion of the LCO director.


This call is for LCO astronomers, as well as astronomers at institutions with which LCO has formal agreements, but without guarantees of Network time. Eligible institutions include the University of California at Santa Barbara (UCSB), IPAC at Caltech, the University of Colorado, and the Astrobiology Center at the University of Tokyo. Astronomers who are part of the extended LCO science team are also welcome to submit proposals. Science team members include Time Allocation Committee members (for 2 years), Science Advisory Committee members (for 2 years), former LCO graduate students (for 3 years), and former LCO postdocs (for 5 years).

LCO's Science Collaboration partners that have guaranteed time conduct independent proposal solicitations and reviews.

Proposal Format:

The proposal body must conform to the following constraints:

  • The Science and Technical Justification sections must not include an author list, nor should the authors be referred to in the body of the text.
  • Citations to publications should be numbered in sequential order in the proposal text. Later citations to the same publication should repeat the original number.
  • The list of references (in number order), the report on past LCO use, and the list of related publications must begin on a separate page from the Justification sections. This information will be provided to the reviewers separately.
  • The font size must be 11 points or larger. (Caption fonts may be smaller.)
  • Margins on all edges must be at least 1 inch.
  • Line spacing must be no denser than 6 lines per inch.
  • The file size must be under 10MB.
  • The recommended length is 7 pages.

Additional Information

The Guidelines for Writing Proposals page provides information on