From scheduling andPhase 2 generation viewpoints
Yu-Ting Wu (EA ARC)
and Phase 2 Generation Group in EA

What is Phase 2?
• Once a project has been approved for scheduling, the project passes into
Phase 2.
approved project
PIphase 2CS

P2G group

observing queue
JAOHD• Each approved project will be assigned an ALMA Contact Scientist (CS).
• A project Helpdesk (HD) ticket will be opened on behalf of the PI for
communication with the CS and others.
• ALMA staff will generate the Scheduling Blocks and, in case of problems, willcontact the CS and the PI. If no problems are found, the project will be
submitted to the ALMA observing queue to await execution at the telescope.

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Why we care about scheduling and Phase 2 generation?
• Various aspects of a proposed observation such as weather conditions
or requested angular resolution and Largest Angular Structure (LAS)
may affect when an observation is scheduled.
• Maximize the completion of our projects!

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Considerations• Section 4.3 and 4.4 of the ALMA Cycle 9 Proposer’s Guide• Weather• Band 9 and 10 observations will bescheduled during the LST ranges givenin the fourth column.
• Bands 7 and 8 observations outside ofthose LST ranges is limited
During the cycle…

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Considerations• Angular resolution• Whenever feasible, PIs are encouraged to enter a range spanning morethan one configuration.

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Considerations• Duplications• Duplicate observations of the similar location on the sky with similar
observing parameters (frequency, angular resolution, coverage, andsensitivity) are not permitted unless scientifically justified.

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Considerations• Duplications• Criteria
ALMA Users’ Policies

7Considerations• Resubmission• Proposal teams that submit a Cycle 9 proposal to observe some or all
the SGs of an unfinished project will have the relevant SGs identified asa “resubmission”.
• Criteria: Appendix A of the Users’ Policies• Policies (Section 4.4.2 of the ALMA Cycle 9 Proposer’s Guide):
For resubmissions, the relevant portion of the Cycle 9 proposal will be cancelled if theobservations are successfully completed in the previous cycle(s).
Observations started in the previous cycle(s) and accepted as a resubmission in Cycle
9 will continue to be observed with the setup of the previous cycle(s).

8Considerations• Special cases• TP only observations?
• Section A.3 of the ALMA Cycle 9 Proposer’s Guide• The TP Array cannot be requested in a standalone mode using the OT.
However, if a user has existing 7-m Array data through their own
program or through archival data, but now realizes that TP Array data
are needed to obtain short spacings, they can submit a proposal
requesting both the 7-m Array and TP Array.
• The proposal should indicate that only the TP Array is needed and thatthe 7-m Array should be descoped if the proposal is accepted. Thisoption is available only if the 7-m Array data have already been obtained.
9Considerations• Time constrained and multiple visits observation
Visit 1

Visit 2Visit 3

If…

Visit 1

Visit 2

X

Visit 3

Visit 1

Visit 2

X

Visit 32+/-1 day5+/-1 day

Visit 1

Visit 2Visit 3

If…

X10

Considerations• Time constrained and multiple visits observation
Visit 1

Visit 2Visit 3

If…

Visit 1

X

Visit 2Visit 32+/-1 day5+/-1 day11

Please don’t hesitate to contact us through the Helpdesk!
https://help.almascience.org/

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