Image of the day

Captured by
John Greenlee

Sadr part two

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Comments:

Fascinating, thanks for taking the time to write this article.
  • John999R [John Shutz]
  • 02/06/2022 04:33PM
I throw my hat in the ring as well. Interesting read.


  • Neptune [David Standen]
  • 02/20/2022 01:07AM
Living in AZ for the past 14 years, I have been to the Mirror Lab a few times. Your story has added to to the enjoyment of my past visits. Thank you.

For the amateur telescope owning crowd, what might the strehl ratio be for the 8.4 meter mirror when it was completed, and what might a Milles-Lacroix graph look like for this mirror?

While I was running 4D Technology, I installed a number of PhaseCam interferometers in the Mirror Lab so this articles brings back memories. Thanks for the report Paul!

  • namooz [chuck baker]
  • 11/04/2022 02:13AM
Yes, very interesting and intense, this search for the impossible, found. Thanks.