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A comment on Two weeks in, the Webb Space Telescope is reshaping astronomy. Parent comment

Re:Two weeks in, the Webb Space Telescope is reshaping astro... by BeefWellington on Monday July 25, 2022 @02:26PM (#32228763)
This reminds me of that time NASA was just gifted two unused hubble-sized telescopes by the NRO[1].

[1] https://www.washingtonpost.com/national/health-science/nasa-...

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Re:Two weeks in, the Webb Space Telescope is reshaping astro... by mulmen on Monday July 25, 2022 @03:40PM (#32229877)
Makes sense. Hubble is believed to be an adapted KH-11.

https://en.wikipedia.org/wiki/KH-11_KENNEN

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Re:Two weeks in, the Webb Space Telescope is reshaping astro... by SiempreViernes on Monday July 25, 2022 @07:09PM (#32232155)
They have different focal lengths, so even if the glass was originally for a KH-11 it couldn't have been used in Hubble "as is", which makes it nothing more than a rough polished mirror blank.
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Re:Two weeks in, the Webb Space Telescope is reshaping astro... by mulmen on Monday July 25, 2022 @07:20PM (#32232247)
Why would it need to be used in Hubble? We don't even know if these satellites are KH-11s. They might be some other design that is capable of fulfilling a NASA mission. The point is that Hubble is suspected to be based on a spy satellite so there is potential technology transfer. Maybe these are just useful as parts.
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