The ALMA Director solicits proposals for observing time with the Atacama Large Millimeter/submm Array on a yearly basis. The solicitation is done through a Call for Proposals, announced in this Section of the ALMA Science Portal. Supporting documents and associated software is made available to the community at the time of the call. Material available here now pertains to the current Cycle 4 (call closed, except for DDT proposals).
Proposals for use of Director's Discretionary Time (DDT) must currently be submitted using the Cycle 3 version of the ALMA Observing Tool available through the DDT proposal page.