1. F/5 telescope work Secondary mirror polishing (SOML) Secondary mount support controls Active optics controls Flat field screen & lamps Telescope baffles Current staffing (LCO + SBS) OK for commissioning; maybe need more for construction

2. F/5 commissioning events Install & test secondary Test Wide Field Corrector Active optics controls (S-H) Install & test telescope baffles Megacam commissioning Lasercutter software MMIRS commissioning

3. F/5 deployment suggestion Once-per-year, 3 months or less Twice-per-month instrument changes Bright and dark time capability required –MMIRS alone or Megacam + MMIRS SAO support for F/11-F/5 change Non-Magellan staffer for duration of run

4. F/5 change operations Remove tertiary & rebalance (1/2-day) Drive to horizon & lock Swap secondaries (1/2-day) Install baffles (1/2-day) Rebalance Drive to zenith Install, rebalance, & test MMIRS (1/2-day)

5. F/5 change time Total requirement is two days and one night