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Поисковые слова: ranger program
Multi-Cycle Treasury Programs
STUC 10 April 2008

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Rationale
SM4 is the last shuttle servicing mission to HST
A successful SM4 will give HST its most powerful suite of instrumentation Instruments don't last forever <4 years per string? [ACS & STIS will be single-string instruments] We need to ensure that we maximise the scientific impact of the new HST

Past Large/Treasury programs
Median size ~130 orbits 4 programs > 300 orbits

Are there science programs that require larger allocations?
STUC Meeting April 10/11 2008 2


Multi-cycle Treasury Programs
Call for white papers issued in early October
3-page descriptions of HST science programs that require >400 orbits No restrictions on type of program ­ spectroscopic, photometric, astrometric Deadline: 30 November - 22 submissions received Confidential assessment by small committee: Brad Peterson, Malcolm Longair, Bob Williams, INR Recommendation made to Director on January 10 2008 Result announced to the community on January 17 2008 (well before Cycle 17 deadline)

Selection process to be finalised through discussions with HST community

STUC Meeting April 10/11 2008

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Assessment process
White paper submissions
1.

22 in total

2.

Programs reviewed by panel (Longair, Peterson, Reid, Williams)
Submissions fall within six broad areas:
Exoplanets, Stellar populations in nearby galaxies, ISM & IGM, Galaxy evolution, The high redshift universe (z>7), Cosmology & dark energy

19 advocating science programs 2 with concerns (do UV instead, protect solar system) 1 concerning the allocation process (Stocke)

3.

Panel consulted via e-mail and telecon

Unanimous agreement that there are sufficient grounds to entertain proposals Recommendation communicated to Director in early January 2008; Director accepts recommendation Community informed via Cycle 17 Announcement web page
STUC Meeting April 10/11 2008 4


Multi-Cycle programs in Cycle 17
MCT Programs will be implemented post-SM4 Cycle 17 Call for Proposals allows for "standard" multicycle proposals How do we deal with these in Cycle 17? 3 options: 1. Explicitly encourage programs
Adverse Smaller
2. 3.

impact on "normal" programs? range of program topics?

Formally exclude large programs
Contradicts guidelines in Call for Proposals

Leave it up to the TAC
If it's the best science, we should do it as soon as possible

We will adopt option #3 and instruct the TAC accordingly
STUC Meeting April 10/11 2008 5


Where do the orbits come from?
Baseline plan ­ mainly affects Large & Treasury programs
1.

Large & Treasury Programs

Typically 1,200 orbits per cycle

2.

Small & Medium Programs
Scale back by ~10%

Conceptually most similar to MCT Programs Anticipate re-allocating ~500 orbits/cycle Typically 2,000-2,100 orbits/cycle cycle
~1,700 directly to panels, 300-400 in central pool

Corresponds to 5-8 separate programs

3.

DD Time

re-allocate ~200 to MCTP allocate

Up to ~350 orbits per cycle, at Director's discretion Leverage science impact of potential programs

In principle, 1,400 to 2,000 orbits could be available for MCT Programs in Cycles 18 & 19
STUC Meeting April 10/11 2008 6


Baseline MCTP Allocation Process
STAGE 0: Preparations
NOIs submitted in advance of deadline
Allows selection of unconflicted TAC members

MCT Call for Proposals
Limited to MCT specific information Cycle 17 CP as reference for standard procedures, e.g. limitations on parallels, etc

Science-based MCT Workshop in late-autumn 2008
Encourage collaborative proposals Broad discussion of possible science topics cf. ACS workshop
STUC Meeting April 10/11 2008 7


Baseline MCTP Allocation Process Two stage process assessment process
STAGE 1: Written proposals submitted via APT
Extended Treasury format
Longer science justification ­ 8 pages vs. 6? Add Scientific Impact section?

Assessed by panel of respected international generalists
Representation from Cycle 17 TAC Representation from STUC Representation from STScI (Director, Williams)

Additional written reviews by external specialist referees TAC reviews and ranks proposals
STUC Meeting April 10/11 2008 8


Baseline MCTP Allocation Process
Stage 2: Presentations
Select a subset of the top-ranked proposals
PIs invited to STScI to give presentations

Smaller review panel ­ subset of main panel
Balance by science topic Panel could recommend marrying proposals

Stage 3: Related community programs Archival research
Allow opportunity for associated AR programs to be submitted via the standard Calls for Proposals for Cycles 18 & 19 Need to select programs in advance of the Cycle 18 deadline
STUC Meeting April 10/11 2008 9


Possible Cycle 18/MCTP schedule
Cycle 18 key dates
SM4 ­ August 2008 SMOV ends ­ November 1 2008 MCTP CP ­ early-November 2008 MCTP Workshop ­ mid-November 2008 TAC Selection starts ­ January 2009 Phase I deadline ­ early-February 2009 Circulate to reviewers ­ mid-February 09 MCTP TAC meets ­ late-March 2009 MCTP MCTP MCTP MCTP PI Presentations ­ late April 2009 Proposal selection ­ early May 2009 AR Announcement ­ early May 2009 AR proposals ­ with Cycle 18

MCTP draft schedule
MCTP NOI submission ­ July 2008 TAC Selection starts ­ September 2008

CP18 release ­ early April 2009

Cycle 18 Phase I deadline ­ mid-July 2009

HST TAC meets ­ mid-September 2009 Phase II deadline ­ mid-October 2009 Cycle 18 starts 1 January 2010 STUC Meeting April 10/11 2008

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