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March 12, 2007, at 10:47 AM by John Young -
Changed lines 1-2 from:

We have received a ROM cost Δ from IC Optical Systems, based on a verbal coating spec.

to:

We have received a ROM cost from IC Optical Systems, based on a verbal coating spec.

Changed line 4 from:
to:
  • Do the fabrication tolerances meet our spec ?
March 12, 2007, at 10:45 AM by John Young -
Changed lines 1-2 from:

We have received a ROM cost from IC Optical Systems, based on a verbal coating spec.

to:

We have received a ROM cost Δ from IC Optical Systems, based on a verbal coating spec.

Changed lines 4-5 from:
  • Do the fabrication tolerances meet our spec?
to:
  • Do the fabrication tolerances meet our spec Δ ?
    • lambda/10 flatness but we asked for lambda/20
Added line 7:
  • Is button approach still feasible?
March 09, 2007, at 01:08 PM by John Young -
Added lines 1-8:

We have received a ROM cost from IC Optical Systems, based on a verbal coating spec.

Points to mention in reply to ICOS:

  • Do the fabrication tolerances meet our spec?
  • Beamsplitter coating performance not good enough
  • What overcoat is assumed for the silver full reflector mirrors?

JC will send a preliminary coating spec to SESO, in order to elicit a comparable ROM estimate.

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