PPT Slide
CONCLUSION: 0.5% refl. loss per year
- Regular CO2 cleaning doesn’t seem to be relevant to help recovering reflectivity by washing, and only very slightly for scattering.
- M1 in closed (with extraction fans) and open tubes seem to behave equally.
- We now intend to wait 4 years (or more) between recoatings and maintain reflectivity above 90% at 550nm
- 3-4 extra nights for science per year (compared to our old bi-annual Al schedule)
- Purchase of 2 water distillers to produce our own bi/tri-distilled water. Investment paid in 1 year (we need about 600l/year at $3.4/l)