<IRMS mini-Study Team Meeting #6 - Optical Design mini-Review >

Participation (tentative)

Dial-in

• 888-387-8686
• Conference participant ID: 746-0475

Agenda

• 0900 - 0910 Optical design review summary - Rich
• 0910 - 0920 CAD model situation - Rich / Bob
• 0920 - 0930 Other business - All

Minutes

• The optical design review went well
  • Minutes and actions are available [[111019_Team_Meeting_5][here]. Nick is traveling this week, so no update on responses to the action items yet.
• Mechanical stall
  • We still have not worked out the issue with obtaining the detailed NFIRAOS solid model for IRMS interface work from HIA
    • Rich is too busy to track this, so Bob has agreed to re-engage Luc on how to proceed (note, we previously decided to pursue the IRMS OIWFS design independently, due to IP issues with NRC)
  • Given MOSFIRE load, this is fully stopping us, but needs full resolution by the New Year.
• OIWFS internal/external decision
  • Given the significant perceived cost savings and ease of implementation, the baseline design choice is an external OIWFS for IRMS
    • We will evaluate the sky coverage / performance / and costs under this assumption (and relative to the (forthcoming) requirements document)
    • We will then iterate with Bahram and the science team to understand the suitability of the estimated performance for IRMS
• Costing exercise
  • Bob has a record of all MOSFIRE costs at Caltech going back to pre-history, but will need time to organize costs to align with the WBS
  • CARA costs include rotator module, perhaps cost of CMM at UCLA
  • UCLA costs include lens mounting, detector heads, software (but software reuse may not be an option for IRMS depending on TMT software environment)
    • For all partners, we will have to estimate the effect of partner subsidies to the effort to get a realistic picture of likely IRMS full cost.
  • Keith points out we should figure out the NRE that won't be needed again for IRMS, particularly where designs were revised during the process
• MOSFIRE continues to pull on IRMS study staff
  • MOSFIRE to be warming over Thanksgiving; new bearing arrives 12/9
  • There was an anomaly on CCR-3, a MOSFIRE detector head cooler, which requires additional time from Bob this week.
• Rich expressed curiosity regarding Bahram's progress on the science case document, which was expected around the time of the optical design review
  • In order for the science team to get organized for their contributions to the OCDD, it seems to Rich important to complete the science case document deliberately

*Meeting schedule change (NOTE!)

• Due to travel and other issues, the next IRMS Team Meeting (#7) will be Friday, Nov 12 at 9a PDT.
• The previously scheduled TM's on 11/8 and 11/15 are hereby canceled.

Outstanding Actions

• Rich to work with TMTO (Brent) to assess suitability of external OIWFS in terms of sky coverage and performance (by Dec 2)
• Rich to contact WMKO (Sean) to request Keck's view of the total MOSFIRE costs (by Dec 10)
• Rich to contact UCLA (Ian) to request UCLA detail MOSFIRE cost breakdown (by Dec 10)
• Rich will contact Bahram for an update on the science team activities (by Nov 8)