Director's Discretionary Time (DDT)
Read Me First!
To submit a Spitzer DDT proposal fill out this online submission form, which includes:
- Standard coversheet information (PI and Co-I contact information, proposal title, etc, as for a regular General Observer submission).
- Complete Astronomical Observation Requests (AORs).
- A strong scientific justification (must be in PDF format), specifying why the request was not submitted during the normal Call for Proposals and the long-term legacy value of the observation. Please use the templates:
Please upload both the science justification and the AORs via the online form.
Note that requests for DDT cannot be used to resubmit all or part of a proposal that was rejected by the normal peer review process.
Guidelines for Submission of Director's Discretionary Time Proposals
Proposals Due: Friday, 23 March 2018, 2 PM PDT
The Cycle 14 Call for Proposals is now closed.
Cycle 14 proposal templates
AOR file parser - perl script for preparing observation summary table from your AORs.
Older Calls for Proposals
Proposal and Program Statistics
Note for Solar System Observers
15 February 2018: Spitzer science operations have been extended through November 2019. The Cycle-14 Call for Proposals is updated as follows:
* Proposal due date: extended one week to March 23, 2018
* Cycle-14 is now 13 months long: 1 November 2018 - 30 November 2019
* Observing time available increased to 6,000 hours: priority 1 = 4000 hours, priority 2 = 2,000 hours
* There is no longer a 500-hour practical limit to the proposal size as multiple visibility windows should be possible for all targets. Any size proposal may be submitted.
A longer cookbook-style document on how to go from an idea to a set of fully-functional Astronomical Observation Requests (AORs) for your Spitzer proposal.
Spot is a software package used by Spitzer observers to plan observations, and Leopard is a software package used to query the archive. Together, this group of cats is referred to as the "Spitzer Pride."