Proposal Submission Tool

1 Start 2 Acknowledgements 3 Preview 4 Complete
Back to Call for Proposals

Section I - General Information

(Only if the proposal is for coordinated observations)
(Only if the proposal is for coordinated observations)
Type of Proposals are defined here. Discretionary Director Time (DDT): This mechanism is for proposals that do not fit within the normal proposal procedure, either because of their urgency or other reasons. These proposals are handled by the Observatory Director, or on their behalf by the Deputy Director for the relevant science area, in consultation with the ASAC chair, telescope scheduler, and other relevant staff. Standard Proposals: These proposals are handled by ASAC. With the exception of Short Proposals, they should be submitted for one of the standard telescope deadlines. *** For Paid Observations (Time-Purchase), please refer to our Observation Rates area.
Observing Mode: Remote Observing is available for experienced users. See information on Remote and In Absentia observing in the Proposal Guidelines.
NOTE: The proposal title, abstract, and technical information become public information once the project has been scheduled. No special characters, including Microsoft Word quotation marks, smart quotes, and dashes, may not be accepted by our system. Please avoid them in the textfields that follow. If you encounter problems when previewing your coversheet, try removing special characters and replacing them with plain text equivalents.
NOTE: Abstract should clearly summarize the scientific objectives in 150 words or less:
NOTE: Outreach Abstract should explain the scientific objectives to the general public in 150 words or less. Please write this in Spanish if you can. (Please note that accented characters cannot be used in this text area)

Author Information

Principal Investigator

Section II - Time Request

A time request is required for this semester. If you also require (and justify in the proposal) time for next semester, please enter it in the second box below. Please address any questions to Christiano Brum (

Search the past schedules for time allocated by project number: Schedule search

To compute the LST rise and set times for your source(s) at Arecibo you can use: Rise and Set Times

Time Distribution
Describe constraints on the days requested. For example: range of calendar dates preferred, or 2 runs of 3 days, spaced 5 days apart, etc. If your observations are triggered by special circumstances or require certain conditions, describe them here. Scientific reasons for the time distribution should also be described and justified in your proposal.
Please enter the minimum usable block of time in a single session for help in scheduling. In case a time slot becomes available, let us know how short a time would be usable for you in your LST range. Remember that the telescope can take up to 15 min to slew to your target, depending on where the previous observer has left it. Please note this is for a single session, not the minimum total time allocation.
E.g. {"Begin": "00:00", "End":"12:00", 1 Day} {"Begin": "10:00", "End":"18:00", 1 Day}
Please estimate the amount of data you expect to collect each day, or observing session. This will ensure that we have enough storage to meet everyone's needs. If you need more than 1 TB please discuss your storage requirements well in advance of your observing time with your support astronomer.

Section III - Instrument(s) Required:

Click here for available receivers. For Radar observations, check transmitters below. To use only the receiver, click appropriate box under receivers.
[Line feed not available for this call]
Check that your LST is in night-time during the requested semester: Nighttime
Check technical data for Arecibo optical instrumentation for details on using these.
If you are requesting several instruments, please describe briefly if all are needed each run, if one is primary and other(s) are backup, etc. Refer to proposal if description is extensive. Also if applicable, give a description of any special equipment needs, hardware, software or recording media

Section IV - Special RFI Considerations

For general information about the RFI situation at Arecibo Observatory, click here. Enter the frequency ranges to be used (in MHz): (Example: 1220 - 1250) [Please separate each range with a carriage return]

Section V - List of Targets

List your targets (leave blank if this does not apply, i.e. for atmospheric observations). NOTE: If your list is more than 30 lines include the list as part of your proposal. If appropriate, give LST visibility for your targets. To compute the LST rise and set times for your source(s) at Arecibo you can use: Rise and Set Times Example: Object RA Dec LST rise-set, or Object type, or criteria for searches, etc.
The proposal should contain your scientific justification and be no more than 4 pages (7 for large). This is field is not required at this point. Instructions on how to upload the proposal later on will be provided after submitting this form. If your file is large (bigger than 6 MB) contact Edvier Cabassa ( or Christiano Brum ( for submission instructions.
Files must be less than 6 MB.
Allowed file types: pdf.
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.
7 + 12 =
Solve this simple math problem and enter the result. E.g. for 1+3, enter 4.