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42848Re: Ritchey Chretien collimation - how?

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  • Enzo Santin
    Jun 1, 2005
      Thanks for all the suggestions!


      --- In ccd-newastro@yahoogroups.com, "Enzo Santin" <enzo_santin@y...>
      > Hi all,
      > a stupid question. I'm experiencing some collimation problems on
      > my 10" Ritchey Chretien scope: a bit of coma etc...
      > When I go to collimate my instrument observing the stars ( Thierry
      > Legault method ) which mirror I must collimate first, the primary or
      > the secondary?
      > There is other methods to achieve good collimation with RC scopes?
      > Sorry for my english and many thanks for suggestions...
      > Enzo Santin
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