Science Operations Update
NGAO - Meeting 11
D. Le Mignant, E. McGrath & C. Max
W. M. Keck Observatory
11/05/2007
Talking Points
 Update to the picture
 Science cases update
 The path to release 2 of SCRD
 SRD update
 version 1.15 available for comments
 Science Ops WSPS
 The on-going: Pre-observing interfaces:
 The guide star tool
 The equivocal
 Discussion / comments
2
System Design Approach
System Engineering
Performance budget
Trade Studies
Observing Efficiency
Budget
Observing Models
TS: KAON 476
Science Operations
3.4: Science Ops
Functional Rqts
Main Drivers & Risk Areas
WSPSs
• Pre-observing interfaces
Observing Timeline
Rationales for Functional and Performance Requirements
SRD v1.15
Observatory Rqts
Science Operations
Observing Scenarios
Science
Requirements
3
Priorities from last meeting (09/17)
1. SCRD
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Include/retrofit observing scenarios
“All-in” science simulations for SCRD
E.g., Requirements for PSF reconstruction
2. SRD from the operations perspective
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Science ops requirements
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Based on ??
Observatory overall requirements
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Based on ??
3. Observing efficiency performance budget
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See Science Ops page
NGS backup science TS?
4. FRD for science operations
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WBS 3.1.3.3.6
5. Science operations plan
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WBS 3.4
WBS 3.2
4
Science Cases Update
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Claire, Liz and David produced a completion status table for the science cases
(Key science drivers and science drivers):
– Linked here
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Rationale:
– Manage the simulations and edits for each science case
– Case / case -> small team for each science case
– Expected outcome: release 2 of SCRD
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For each science case
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Status of SCRD & SRD tables and text
Status of observing scenarios
Status of simulation (AO and science) and new requirements
Need to identify SC Volunteers (we don’t pay them!)
What’s next:
– Find and work with the volunteers case by case. (twice a month meetings, etc)
– Time/effort allocation?
– Process already started for Asteroids (KSD #1)
5
SRD v1.15
• Included changes up to 1.14
• Changes to section 6.1 and 6.2, then posted on the NGAO TWiki
pages: linked here
• Included science operations in section 6.1.4,
– Requirement summary tables 19-21
• Updated section 6.2 Observatory Requirements
– Added (moved) telescope and dome environment requirements
– Added Observatory Operational requirements
• Any volunteer to review the changes and iterate?
6
On-going WSPS
• Science operations: the on-going
– WBS 3.4.1.1: Pre-observing interfaces
• AO Guide Star Interfaces
• Science Observations Simulation Tools
• Soon to start:
– WBS 3.4.1.2: Observing interfaces
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Acquisition
Observing Sequences
Instrument, AO & Telescope Observer Interfaces
Science Data Quality Monitoring
• TBD: FRD for science operations
– WBS 3.1.3.3.6
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AO Guide Star Interfaces
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Science Observations Simulation tools
• Requirements on Simulation Tools have to be defined and include
similar challenges than for PSF reconstruction:
– How to measure the quality of simulations
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SR, EE, FWHM of peak and halo
PSF radial fit
Speckle intensity and distribution
Deconvolution residuals
?
– What is the experience of GPI and others
• Coordination of the effort with the IWG
– How much can anticipate an instrument interface design?
– Requirements?
9
3.4.2.1 Operations Architecture
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Click here
WSPS not agree and equivocal
TBD coordination work with 3.2
3.4.2.2 Operations Optimization
• Click here
• WSPS not agree and equivocal
• TBD coordination work with 3.2
10
Discussion / Comments
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Priority list
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More effort on SCRD/SRD than FRD for operations
Pre-observing Interfaces on-going
Observing timeline / observing scenarios
Operations Architecture.. (not before December)
Iterations between science requirements and system design.
– Our plan includes iterations between the SCRD and the AO system design.
– Simultaneously with completing SCRD v2.0, we need to be working with Rich to
refine his spreadsheet calculations of the relevant wavefront errors; with Chris
and scientists to simulate the relevant AO performance for analysis by the
scientists; then use simulations to translate science requirements to AO system
requirements.
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We hadn't expected SCRD v. 2.0 to take as long as it has taken.
– Requirements tables from SRD were a very useful approach, and have clarified
what are the key questions that need further work.
– Some of these have been addressed, others are in progress
– Hard to get senior scientists to do substantive work; younger generation has
been more useful.
– SCRD v. 2.0 completion status will be posted and updated.
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Any questions?
11