<IRMS mini-Study Team Meeting #9 >
Date: Tues, Jan 03, 2012
Time: 9-9:30am PDT
Location: Various
Participation (update as appropriate)
Attending: N. Konidaris, B. Weber, R. Dekany |
Call-in: |
Unavailable: K. Matthews |
Dial-in
- 888-387-8686
- Conference participant ID: 746-0475
Agenda (tentative)
- 0900 - 0910 MOSFIRE update - Bob
- 0910 - 0930 Review of IRMS status - Rich
- Priorities for next couple of months
- Action items
Minutes
- The new MOSFIRE bearing was tested at the worst-case gravity orientation before Christmas and appears to work
- Add'l testing to be done this week; on schedule for shipping in the Feb 8 - 16 window, depending on boat schedule
- Continued need to deliver MOSFIRE continues to impact IRMS study progress
- December progress additionally slowed by long holiday
- Key areas for IRMS in next couple of months
- Refinement of IRMS requirements document
- Development of IRMS CoDD - led by Bahram
- Development of IRMS OIWFS requirements - requires TMT AO support for PSF / sensitivity models
- The largest uncertainty in the entire study seems to be whether the patrol range for a OIWFS exterior to the vacuum vessel provides sufficient sky coverage without blocking the spectrographic field (because it would be rather far from the focus).
- Notes from the last meeting minutes:
- We discussed the basic architectural options for the OIWFS
- Strategy is to evaluate the performance vs. sky coverage for a 'one-side', no-incursion, external-to-the-dewar patrolling sensor (similar to IRIS OIWFS), and then address any performance shortfall if necessary
- Possible avenues for larger sky coverage if needed:
- Allow some incursion into spectroscopic FoV (probably diminishing gains because an external patroller is so far from focal plane)
- 'Two-sided' dual OIWFS to patrol each side without incursion
- Focus sensing strategy may impact performance as well (e.g. 2x2 SH WFS v. pyramid v. separate (slower) focus sensor(s))
- Refinement of IRMS cost estimate using best estimate of MOSFIRE as-built costs
Actions
- Rich
- Contact Brent at TMT to initiate discussion of OIWFS performance model
- Contact Sean and Ian to consolidate non-CIT MOSFIRE costs
- Update IRMS mini-study schedule to reflect MOSFIRE and other delays * Discuss timing of interim review with Luc (targeting May 2012 now)
- Bob
- Consolidate CIT MOSFIRE cost summary, including sort of trail of shop charges
- All
Meeting schedule
- The next IRMS team meeting will be in 2 weeks: Tuesday, January 16 at 9a.
This topic: TMT/IRMS
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Topic revision: r1 - 2012-01-04 - RichardDekany