Introduction
Software Tools To Help with Proposals
We provide you with a variety of tools to help you investigate options for viability and, ultimately, assist in the generation of a proposal for submission to the JWST Time Allocation process. We also offer a handy Pocket Guide that provides technical information about each instrument.
Tools
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APT
The Astronomer's Proposal Tool is used to write, validate, and submit proposals for both HST and JWST.
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ETC
The Exposure Time Calculator performs signal-to-noise ratio calculations for all observing modes.
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TVT
The Target Visibility Tools help you assess target visibilities before you enter information into APT.
More Tools
More Tools
Proposal Training
Proposal Preparation Training
Review our Workshop-in-a-Box materials to help you write your JWST proposals.
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The NASA James Webb Space Telescope, developed in partnership with ESA and CSA, is operated by AURA’s Space Telescope Science Institute.