[HN Gopher] The Webb  telescope has 'perfectly misshaped' mirrors
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       The Webb  telescope has 'perfectly misshaped' mirrors
        
       Author : Stratoscope
       Score  : 9 points
       Date   : 2021-12-19 02:41 UTC (20 hours ago)
        
 (HTM) web link (www.houstonchronicle.com)
 (TXT) w3m dump (www.houstonchronicle.com)
        
       | bil7 wrote:
       | the first 6 words of this headline shot fear through me jumping
       | to the conclusion that something had gone wrong with the launch
       | setup
        
       | tejtm wrote:
       | ahh yes, much the same way Legos are "perfectly misshaped"
       | marbles
        
       | marcodiego wrote:
       | People still remember Hubble's first months. This is clearly a
       | clickbaity title trying to capitalize on that.
        
         | Stratoscope wrote:
         | This has nothing to do with Hubble's first months.
         | 
         | The article describes how the mirrors are deliberately
         | misshapen at normal Earth temperatures, so when they cool down
         | to their -380F/-230C/44K operating temperature they will then
         | (hopefully!) be in focus.
         | 
         | I did not know that before; I learned about it and a few other
         | interesting facts from this article.
         | 
         | Clickbaity title or not, I found it an informative read.
        
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       (page generated 2021-12-19 23:01 UTC)