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AAO AusGO : 29 June 2009
Demystifying the Queue at Gemini Observatory
AAO Epping - 29 June 2009
Henry LeeGemini South, Chile
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AAO AusGO : 29 June 2009
How the queue works
Maximizing science
Phase 2 pitfalls
... my emphasis will be on Gemini South ...
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AAO AusGO : 29 June 2009
Queue-scheduling
• Three-band structure for (I)TAC-approved programs
• Within each band, programs are of equal merit
• Observations in the queue selected by★ scientific ranking; the “band”★ observing conditions at present★ target position & visibility : low in sky? early? late?★ overall use of instrument and/or instrument settings ★ program status : started & subsequent completion★ (partner balance done at ITAC)
• For conditions, do all B1 before B2, then B2 before B3
• B3 is designed to overfill queue & provide flexibility
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AAO AusGO : 29 June 2009
Queue-scheduling
• Matching priority & observing conditions✴ Cloud cover, CC✴ Image quality, IQ✴ Sky brightness, SB - optical✴ Water vapour, WV - NIR, MIR
• Advantages :★ able to fit observations with their required conditions to
actual conditions★ can set aside time before hand for SToO ★ quick-response (< 5 minutes) to RToO; e.g., GRBs
“instrument switch” is simply moving the science-fold
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AAO AusGO : 29 June 2009
Band Requirement
B1 (~30%)> 90% completion;
some progs have 2-semester “rollover”
B2 (~30%)75% completion;
85% of started progs w. 75% data obtained
B3 (~40%)80% of started progs w. 75% of minimum data-hours obtained
B4“poor-weather” filler
CC70+ IQ=Any SB=Any WV=Any
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AAO AusGO : 29 June 2009
Queue coordination
• Daytime “analog” to nighttime queue-observer
• Interactions with ✤ queue-observers✤ instrument-teams✤ day-crews✤ data-analysts (DA)✤ contact-scientists (CS)✤ program PIs (PI)
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AAO AusGO : 29 June 2009
Queue coordination
• Nightly observing plans for multiple condition-variants
• Changes mask- and instrument-configurations as necessary
• Ensures calibrations are completed for program
• Communicates with CS, IT, PIs about possible issues
• Ensures data-quality checks with help from DAs
• “Core” queue-coordinators : long-term scheduling
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AAO AusGO : 29 June 2009
(Observing) Conditions
• B1-2 : no need to relax observing conditions
• B3 : as queue-overfill, we do not carry out all observations✦ provide flexibility for non-ideal conditions✦ minimum-time < requested-time ?✦ targets’ list and visibility ? ✦ relax observing conditions & maintain science goals ?✦ “best” flexibility at CC70+ IQ85+ (optical)
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AAO AusGO : 29 June 2009
Phase 2 pitfalls
• Targets at “semester” boundaries
• Guide stars too faint for conditions✴ recommend UCAC2 catalog for GMOS OIWFS
• Usable finder charts :✴ careful to show target, identifiers in crowded-fields✴ chart-size appropriate to instrument field-of-view
• If special acquisition or other, please tell us✴ we are not experts in every field ...✴ nor can we read minds ...
• Don’t forget appropriate/necessary calibrations ...
• Can use templates from standard OT libraries
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AAO AusGO : 29 June 2009
Date 2009B semester
10 June successful program PIs notified
12 June2009B schedule published on web
2009B OT software released
13 JulyDeadline for PIs to submit Phase 2;applies to both queue & classical
27 JulyReviews of all Phase 2 completed;
checking from NGOs to CS @ Gemini
1 AugustSemester 2009B begins;
09B programs may be observed to fill queue
17 August2009B queue fully loaded; activate all 09B programs
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AAO AusGO : 29 June 2009
“Help me, help you ...” (Jerry Maguire)
• Submit Phase 2s before deadline (July 13)
• Target visibility, guide-stars, finder charts ...
• If MOS, define and submit preimaging ASAP✴ early preimaging : earlier mask-preparation✴ submission deadlines : 1st, 15th of every month✴ MOS program activated and executed sooner
• For most observations, standard OT libraries available
• Band 3 : relax observing conditions? possible targets outside of “high-pressure RAs”?
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AAO AusGO : 29 June 2009
• Submit Phase 2s before deadline (July 13)
• Target visibility, guide-stars, finder charts ...
• If MOS, define and submit preimaging ASAP✴ early preimaging : earlier mask-preparation✴ submission deadlines : 1st, 15th of every month✴ MOS program activated and executed sooner
• For most observations, standard OT libraries available
• Band 3 : relax observing conditions? possible targets outside of “high-pressure RAs”?
“Help us help you ...”
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AAO AusGO : 29 June 2009
“Show me the money ...” (Jerry Maguire)
• Queue is flexible, but keeps to scientific band
• Get your Phase 2s submitted early!
• Queries to Gemini HelpDesk
• If B3, relax observing conditions ?
• Good luck & may the skies be with you, always ...
• Current queue & schedule
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AAO AusGO : 29 June 2009
“Show me the photons ...”
• Queue is flexible, but keeps to scientific band
• Get your Phase 2s submitted early!
• Queries to Gemini HelpDesk
• If B3, relax observing conditions ?
• Good luck & may the skies be with you, always ...
• Current queue & schedule
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