CHEOPS  "Frequently Asked Questions" :  Discretionary programme


Below is a collection of Frequently Asked Questions (FAQs), together with answers, relating to the preparation and submission of proposals for CHEOPS Discretionary Programme. The page will be updated regularly to answer questions that come up relating specifically to the programme, including submission of proposals.

If you do not find an answer to the question you have, please review the documentation provided on the discretionary programme webpage. If you still cannot find the answer, then please send an email to

Please note that it may take a few days for questions to be answered, and to be put up onto this webpage.

Incase of problems with the email address noted above, please contact   kate dot isaak at esa dot int, replacing "dot" with "." and "at"  with "@".


Latest update:    17 July 2020


Q2 What constraints are there on proposals that can be submitted to the Discretionary programme?

Full details, including constraints on the number and type of targets that can be proposed, are provided in the Policies and Procedures document which is available at this link.


Q1 When will the discretionary programme open?

The programme is foreseen to open by mid-July 2020. All details, including tools and documentation to support proposal preparation will be available from the discretionary programme webpage at this link.