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DrDave

Joined: Monday at 2:42 PM

Last seen: Yesterday at 3:50 PM

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- DrDave replied to the thread A 'giant' rising in the desert: World's largest telescope comes together (photo).
  
  You are producing a telescope with a nearly 40 meter diameter the focal point of the primary will be 743 meters away. If you wish to...
  
  Yesterday at 5:53 AM
- DrDave replied to the thread A 'giant' rising in the desert: World's largest telescope comes together (photo).
  
  Well its horses for courses there. It has sufficient collecting area that you'll be able to do things like spectroscopy of the...
  
  Monday at 4:34 PM
- DrDave replied to the thread A 'giant' rising in the desert: World's largest telescope comes together (photo).
  
  The 200" mirror on Mount Palomar is not a convex mirror but a concave one.
  
  Monday at 2:43 PM
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