INTEGRAL's final call for Guest Observing time, AO-21, is now open, deadline 29th September:
https://integral.esac.esa.int/newsletters_html/2023-09-04/
The ESA Director of Science (Prof. Carole Mundell) released the 21st Announcement of Opportunity (AO-21) for observing proposals with INTEGRAL.
This is the last AO for INTEGRAL and therefore the last chance to benefit from this special observatory and its unique capabilities. New INTEGRAL proposers are welcome, and some information especially targeting newcomers can be found in this 7-page brochure INTEGRAL's final AO: Capabilities and Science Highlights:
https://www.cosmos.esa.int/documents/332075/332188/Brochure_INTEGRAL_Capabilities.pdf
This announcement solicits proposals for observations to be carried out from January 2024. Proposers from all over the world are welcome to participate. All proposals will be subject to an independent peer review by the INTEGRAL Time Allocation Committee (TAC). The deadline for proposal submission is Friday 29 September 2023, 14:00 CEST.
More information can be found on the AO-21 page