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The James Webb Space Telescope will offer proposal opportunities for General Observers (GO), Guaranteed-Time Observers (GTO), and Early Release Science Programs (DD ERS) during Cycle 1. JWST is scheduled for launch in Spring 2019. Science observations will commence after a 6 month commissioning phase, with Cycle 1 proposals deadlines in 2017/2018.

We invite scientists to participate in the first cycle of investigations with the James Webb Space Telescope (JWST). JWST is an international collaboration between NASA, the European Space Agency (ESA), and the Canadian Space Agency (CSA). JWST is operated and managed by AURA's Space Telescope Science Institute (STScI). The links below provide information, policies, deadlines, and instructions for proposing opportunities with JWST in Cycle 1.


Important Dates

Rows are color coded by opportunity, where red = GTO, green = DD ERS, and white = Cycle 1 GO

Release of the Cycle 1 Call for GTO ProposalsJanuary 6, 2017
Release of the Cycle 1 Call for DD ERS Notices of IntentJanuary 6, 2017
DD ERS Letters of Intent dueMarch 3, 2017, 8pm ET
Cycle 1 GTO Science Descriptions and Observation Specifications dueApril 1, 2017, 8pm ET
Release of the Cycle 1 Call for DD ERS ProposalsMay 19, 2017
APT version 25.1 Released (with updated Cycle 1 overhead calculations)June 1, 2017
GTO Observation Specifications Published (public)June 15, 2017
APT version 25.2 Released (primarily HST updates)June 21, 2017
GTO APT Technical Reviews and Revisions BeginJuly 28, 2017
DD ERS Proposal DeadlineAugust 18, 2017, 8pm ET
DD ERS Results ReleasedNovember 2017
GTO APT Technical Reviews and Revisions CompletedNovember 15, 2017
APT version 25.4 Released (further updates for Cycle 1 GO Call)November 20, 2017
Submissions of GTO APT proposals completedNovember 30, 2017
Release of the Cycle 1 Call for GO ProposalsNovember 30, 2017
GTO APT Files advertised (public)December 15, 2017
DD ERS APT Files advertised (public)December 2017
Cycle 1 GO Proposal DeadlineApril 6, 2018
Cycle 1 Budget DeadlineAugust 30, 2018
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JWST Opportunities and Policies