1. LBT Q2 2008 Eng/SW Review ALPC – Primary Mirror Aluminum Shooting

2. 21-Jul-2008LBT Q2 2008 Engineering Review Highlights (Q2/2008) None None

3. 21-Jul-2008LBT Q2 2008 Engineering Review Progress (Q2/2008) Planning From Q1 Review Planning From Q1 Review Make duplicate cell feedthrough for Sfigotto, pressure gauge, etc √ Make duplicate cell feedthrough for Sfigotto, pressure gauge, etc √ Make duplicate Sfigotto pressure control √ Make duplicate Sfigotto pressure control √ Next Aluminization is 11-15 Aug (on SX) Next Aluminization is 11-15 Aug (on SX)

4. 21-Jul-2008LBT Q2 2008 Engineering Review Open Issues Technical Technical Documentation for Aluminization System from OSU improved but needs more work Documentation for Aluminization System from OSU improved but needs more work Keep cleaning fluids out of cell Keep cleaning fluids out of cell Upgrade of Aluminization System Upgrade of Aluminization System Cleaning/Stripping System Cleaning/Stripping System Glow discharge ? Glow discharge ? Locking devices unreliable Locking devices unreliable M3 swing arms need to be retracted farther than normal to clear belljar M3 swing arms need to be retracted farther than normal to clear belljar LBT personnel can do most of the process now, as long as nothing goes wrong LBT personnel can do most of the process now, as long as nothing goes wrong Something always goes wrong Something always goes wrong Schedule Schedule None None Financial Financial None None Resources Resources None None

5. 21-Jul-2008LBT Q2 2008 Engineering Review Planning (Q3/2008) Next Aluminization starts 11 Aug on SX Next Aluminization starts 11 Aug on SX Monday 11th: Mirror Wet with Chemicals 11AM-3PM Monday 11th: Mirror Wet with Chemicals 11AM-3PM Tuesday 12th: Final Wipe of SX Mirror Surface at Zenith, Tip telescope to Horizon Tuesday 12th: Final Wipe of SX Mirror Surface at Zenith, Tip telescope to Horizon Wednesday 13th: Mount Bell Jar & Start Pumpdown Wednesday 13th: Mount Bell Jar & Start Pumpdown Shoot aluminum Thursday night or Friday morning depending on weather and other issues. Shoot aluminum Thursday night or Friday morning depending on weather and other issues. Warmup on Saturday Warmup on Saturday Vent to atmosphere on Sunday (or Monday AM). Vent to atmosphere on Sunday (or Monday AM). Dismount Bell on Monday 18th. Dismount Bell on Monday 18th. Park Bell on Tuesday 19th Park Bell on Tuesday 19th Prep for Washing DX on Weds 20th Prep for Washing DX on Weds 20th Wash DX on Thursday 21st AM (with enough manpower, we might be able to wash DX on Weds 20). Wash DX on Thursday 21st AM (with enough manpower, we might be able to wash DX on Weds 20).