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obs:123 [2009/03/20 20:07]
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obs:123 [2009/03/20 00:00] (current)
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 ==== Focusing and filters ==== ==== Focusing and filters ====
  
-There is a built-in focus/​temperature self-correction to prevent frequent focusing during the operation. The focal offsets of various filters are not known and it is known that they are not treated within the existing solution. They are very likely to be small for the existing filter set, but may be of a concern if a custom filter is inserted. ​+<del>There is a built-in focus/​temperature self-correction to prevent frequent focusing during the operation.</​del> ​The focal offsets of various filters are not known and it is known that they are not treated within the existing solution. They are very likely to be small for the existing filter set, but may be of a concern if a custom filter is inserted. ​
  
 There is a basic set of Bessel filters. Custom filters of 50x50mm may be inserted upon request. There is a basic set of Bessel filters. Custom filters of 50x50mm may be inserted upon request.
 +
 +We tested the focusing procedure, it's on ultra2:​~/​jelinek/​focscr123,​ it works, produces images with columns of stars with different focuses. We have been told that within CAHA there is a program to tell the best focus out of such an image.
 +
 +When running this script we get a ''​Warning:​ interrupt in select function''​ at the graphical screen. Weird.
  
 ==== Presentation ==== ==== Presentation ====
obs/123.txt ยท Last modified: 2009/03/20 00:00 (external edit)