If you want to use APEX for your research, please check the call for proposals from your partner institution (MPIfR, ESO, Onsala or ANID if you apply through the Chilean TAC). You will find there specific deadlines and availability of PI instruments per partner. Remember that Facility Instruments are available to any APEX proposer.
Max-Planck-Institut für Radioastronomie
ESO proposal deadlines are set up twice a year, in March and September, for the observing periods 1 October – 31 March and 1 April to 30 September, respectively.
You can consult the ESO Proposal Preparation and Submission web page for details.
For questions, refer to the ESO APEX contact: Carlos De Breuck
[Send an email]