1. LMS11/26/01NIO Workshop on Wind Modeling Welcome and Introduction Larry Stepp

2. LMS11/26/01NIO Workshop on Wind Modeling Agenda November 26 - morning 9:00Welcome and introductionLarry Stepp 9:20Gemini water tunnel testingPaul Gillett 9:40The Gemini South wind loading studyMyung Cho 10:10Analysis of the Gemini dataOleg Likhatchev 10:50Break 11:00Previous CFD modeling of Gemini telescope and enclosure Dave DeYoung 11:30Enclosures for Extremely Large TelescopesDavid Halliday 12:00 Lunch

3. LMS11/26/01NIO Workshop on Wind Modeling Agenda November 26 - afternoon 1:00Wind modeling studies at TSUDr. Xu and/or Mark Whorton 1:30What do we need to know for GSMT?George Angeli 2:00Discussion of what we have learned so far about telescope wind loading 3:00Break 3:20Discussion of next efforts 5:00Adjourn 6:30Dinner

4. LMS11/26/01NIO Workshop on Wind Modeling Agenda November 27 - morning 9:00Planning session for additional studies 11:00Establish action items 12:00 Adjourn Workshop Lunch

5. LMS11/26/01NIO Workshop on Wind Modeling Who we are Space Telescope Science Institute National Optical Astronomy Observatory Gemini Observatory National Solar Observatory AURA New Initiatives Office Association of Universities for Research in Astronomy

6. LMS11/26/01NIO Workshop on Wind Modeling NOAO Operates telescopes on Kitt Peak, Arizona and Cerro Tololo and Cerro Pachon, Chile Runs Time Allocation Committees that assign observing time to US Astronomers Develops new facilities for ground-based astronomy

7. LMS11/26/01NIO Workshop on Wind Modeling Gemini Gemini Observatory is an international partnership of 7 countries United States United Kingdom Canada Chile Argentina Brazil Australia

8. LMS11/26/01NIO Workshop on Wind Modeling Gemini There are two Gemini telescopes, each 8 meters in diameter Mauna Kea, Hawai’i Cerro Pachon, Chile

9. LMS11/26/01NIO Workshop on Wind Modeling Background In the past, observatory domes were designed to shield the telescope from the wind as much as possible However, massive domes with minimal ventilation trapped heat Degraded seeing Many telescopes of the current generation have vents to provide natural ventilation Improved seeing More concern about wind buffeting

10. LMS11/26/01NIO Workshop on Wind Modeling Background Observatories are interested in wind modeling for two reasons: Understand seeing effects Understand wind buffeting Many previous wind studies for existing telescopes were more concerned with seeing Plans for future extremely large telescopes depend on understanding wind buffeting

11. LMS11/26/01NIO Workshop on Wind Modeling GSMT NIO is developing design concepts for a 30- meter Giant Segmented Mirror Telescope Wind buffeting will be a key issue

12. LMS11/26/01NIO Workshop on Wind Modeling Goals for the Workshop Review previous wind flow studies of Gemini Telescopes Evaluate what has already been learned Identify key parameters involved in wind loading of telescopes Identify further studies on Gemini Telescopes to increase our understanding of wind loading on larger telescopes Set priorities for upcoming studies Reach agreement on division of labor for studies

13. LMS11/26/01NIO Workshop on Wind Modeling Agenda November 26 - morning 9:00Welcome and introductionLarry Stepp 9:20Gemini water tunnel testingPaul Gillett 9:40The Gemini South wind loading studyMyung Cho 10:10Analysis of the Gemini dataOleg Likhatchev 10:50Break 11:00Previous CFD modeling of Gemini telescope and enclosure Dave DeYoung 11:30Enclosures for Extremely Large TelescopesDavid Halliday 12:00 Lunch