Proposal Format



Palomar Observatory

Keck Observatory

Caltech Optical Observatories

Caltech Astronomy

California Institute of Technology

Call for Proposals 2015B

The 2015B Call Closed on 31 March 2015

Call Material Provided For Reference


  • Keck I and Keck II, with possible trades for SUBARU time.
  • Palomar 200-inch.
  • Palomar 60-inch (service observing only).
  • Palomar Oschin Telescope (service observing only).


Caltech Faculty, Senior Research Associates, Senior Research Fellows, Post-Doctoral Scholars, Senior Research Staff (approved by the COO Director) and Graduate Students may apply for COO-administered observing time at Keck and Palomar, subject to the following:

  • Applicants must be in residence at Caltech at the time proposals are submitted.
  • Caltech Faculty and Senior Research Associates may submit no more than three Keck proposals and/or any number of Palomar proposals.
  • Caltech Senior Research Fellows, Post-Doctoral Scholars and Senior Research Staff may submit any number of Palomar proposals but are limited to one Keck proposal per semester.
  • Caltech Graduate Students may apply for Palomar time only.

Proposal Format

  • Each proposal should cover a single, coherent, well-defined scientific topic.
  • If two or more Keck proposals are submitted, the one representing your highest-priority should be designated as Priority 1 or Principal; all others are Priority 2 or Secondary. Similarly, if two or more proposals are submitted for the Palomar telescopes, your highest priority project should be designated as Principal and all others as Secondary. Only one proposal for Keck time and only one proposal for 200-inch time may be designated as Principal. Proposal priority designations are made on the Keck and Palomar coversheets -- please make your priority intent clear for time allocation processing, and please note that page limits for Principal and Secondary proposals are different (see below).
  • Proposals consist of four parts: Cover Sheet, Discussion, Figures, Observing List.
    1. Cover Sheets:
    2. Discussion: Provide a short (see page limits, below) description of the project, explaining the scientific goals and methodology, and justifying the time and equipment requested. Also include citations to publications referenced in the discussion. For new projects, provide an estimate of the total time required to complete the work; for continuing projects, give the status of previously obtained data and an estimate of the time needed to finish. For projects in support of an approved thesis, include an estimate of the total observing time required, the time already allocated and the status of the data already in hand. Explain any constraints that may affect scheduling. Do not embed the figures within the text of the Discussion section.
    3. Figures: Collect all images, graphs, tables, etc. into a single section. N.B. Copies of the proposals sent to the TAC members will be printed in black-and-white format but the committee members will be able to access color versions in a secure on-line directory.
    4. Observing List: Provide a list of targets to be observed, including names, coordinates and magnitudes.
  • Page limits: 1 page = One side of a sheet 8½ x 11 inches, with suitable margins. Type size = 11- or 12-point.
  • DescriptionDiscussion FiguresObserving List
    Principal Proposal 3 pages 4 pages As needed
    Secondary Proposals 2 pages 4 pages As needed
    Palomar - Large Project 8 pages 4 pages As needed
  • When finished, combine your cover sheet with the Discussion, Figures and Observing List into a single pdf document (see note below). Check that the file is smaller that 1M and attach it to an e-mail to brucato-[at]-astro.caltech.edu not later than 5:00 pm PDT Tuesday, 31 March 2015. The subject line of the message should be in the following form: [your last name]-[Telescope]-[A sequence number to distinquish it from others others submitted for the same telescope]. Examples: Jones-Keck-1 or Jones-P200-2.

Special Notes


  • For projects requiring date-specific scheduling: (a) Be sure to check the appropriate box on the cover sheet and (b) include in the Figures section of the proposal a table of the events to be observed. Give the name of the object, its coordinates, and the date and time (Pacific Time for Palomar, Hawaii Time for Keck) of the event. [Remember: Telescope time to observe an event occurring - for example - at 02h PDT on 6 August has to be scheduled for the night of 5 August.]
  • For projects involving both Keck and Palomar, submit the Keck and Palomar cover sheets separately. The discussion, figures and observing list need be attached only to the Keck cover sheet.
  • Requests for half nights will be accommodated within the constraints set by the scheduling. When requesting half nights, specify in the proposal discussion whether first-half or second-half time is required.
  • Target of Opportunity projects may be requested for Keck and/or the 200-inch. See ToO Policy for details.


  • For Keck instrument availability in 2015B, go to Keck Instrument Availability.
  • Only a single proposal (cover sheet, discussion, figures and observing list) is needed for a project involving both Keck I and Keck II.
  • LGS observing at Keck is critically dependent on conditions and you are advised to have a contingency plan should LGS be unavailable. See Policy on Backup Instruments During LGS-AO Runs.
  • To support the installation and testing of the new laser, the Keck II LGS AO system will be unavailable, beginning 07 October 2015. The Keck II NGS AO system will not be affected by this project and will be available for observing throughout 2015B.
  • NIRSPEC will begin a routine service mission beginning in August 2015, with completion expected in mid-September 2015.
  • OSIRIS will not be available for observing beginning in December 2015 to allow the first of two detector up-grades.
  • A limited amount of Keck time may be traded for time at SUBARU in 2015B. SUBARU will offer:
    • Suprime-Cam (available only during the dark time in September and December)
    • FOCAS
    • HDS
    • MOIRCS (available from Ocotber 2015 on a Shared Risk basis following a detector up-grade)
    • IRCS (with NGS/LGSAO188 elements)
    • FMOS
    • COMICS
    • Hyper Suprime-Cam (maximum of 3 or 4 nights to all Keck Observers; available on a Shared Risk basis during dark time in August, October, November and January).


  • For projects involving more than one Palomar telescope, submit the appropriate cover sheet for each separately. The discussion, figures and observing list need be attached to only the cover sheet for the larger telescope.
  • For Hale Telescope instruments, see the table below. Private and Semi-private instruments may be requested only with the prior approval of the instrument builder.
  • DBSP, LFC, WIRC and TripleSpec may be operated by remote observing. For additional information, see Cahill Remote Observing Facilities.
  • The Palm 3000 system (P3K) will be in regular operational status with the PHARO facility near-IR camera in 2015B. P3K will remain on Shared-Risk status with the SWIFT instrument. Interested proposers should see the 200-inch Instrument Table below, and the P3K Observers information summary.
  • P3K and the East Arm Echelle cannot be scheduled simultaneously (issues with telescope balance).
  • Observers using the 200-inch telescope may request instruments to be installed simultaneously at the prime focus, Cassegrain focus and/or the east-arm focus (East Arm Echelle only). The use of a secondary instrument must be identified on the cover sheet and justified in the proposal discussion. On the Cover Sheet, select the principal instrument to be used from the drop-down lists on the Observing Time Preferences table and specify the secondary instrument in the space provided under Additional Information. Secondary instruments should be requested only if they are integral to the program and if there is a very high probability that they will be used during the observing run.
  • Proposals for 200-inch time in support of Large Projects may be submitted. See Large Project Proposals for details.
  • Palomar 60-inch Telescope - A share of the Science Time at the 60-inch may be allocated to Caltech observers for general research. Please see P60 Observers Information for information on planning P60 observations. In addition to the facility CCD camera, Caltech observers may request observing time using the SED Machine, which will be available on a Shared-Risk basis. Contact Konidarias (npk@caltech.edu)
  • Oschin (P48) Telescope - Up to 20% of the time at the Oschin/P48 Telescope (with the MOSAIC camera) may be allocated to Caltech observers for general research. Please see P48 Observers Information for information on planning P48 observations. Note P48 operates in service observing only.

Note on Merging PDF Documents

Combine the cover sheet and discussion section (including the figures and observing list) of each proposal into a single pdf document. For information on merging pdf documents, see PDF File Merging

Proposal pdf documents are typically 500K to 1M in size. Files larger than 1M are cumbersome to handle, so, if your proposal is larger than 1M, please try reducing the resolution of your images.

Observing History and Bibliography

The Director and the Time Allocation Committee place a high premium on the effective use of telescope time and the prompt publication of results derived from the observations. Accordingly, your report accounting for your previous observing time and your publications constitutes an important adjunct to your proposals. Submit this report as a single, two-part document consisting of:

  1. Observing History: List the observing time allocated to you for all projects in the last eight semesters [2011B to 2015A, inclusive] and summarize the status of each. Provide:
    • Semester.
    • Telescope and proposal number.
    • Instrument(s) used.
    • Number of nights allocated and the number of nights useable.
    • For ToO projects, give a comprehensive list of the interrupts invoked, including for each the date, telescope, instrument and duration.
  2. Bibliography: Provide a bibliography of your refereed papers based on Keck (or from observing time awarded through Keck trades) and/or Palomar data, published or submitted for publication during the last eight semesters [2011B to 2015A, inclusive], even if you were not the principal investigator of the observing proposals.

Attach the report (as a pdf document) to an e-mail to brucato@astro.caltech.edu (not later than 5:00 pm PDT Tuesday, 31 March 2015 with the subject line in the following form: [your last name]-History. (For example: Jones-History)

Submit this report as a completely separate document. Do not include it in your proposal(s).


Keck Instruments

Instrumentation for the Keck Telescopes is summarized on the WMKO Keck Instrument Page.

200-inch Telescope Instruments

Instrumentation for P200 is summarized on the P200 Instrument Page. If you propose to bring your own equipment to P200 please specify the appropriate focus code [Prime Focus (OE-PF), Cassegrain (OE-Cass), Cassegrain + P3K Base (OE-Cass+P3K), or Coudé (OE-Coudé)] on your P200 coversheet.

COO Proposal Call 2015B / v 1.0
Last updated: 16 February 2015 RJB/AFB/ACM