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can someone identify

Comments

  • Registered Users, Registered Users 2 Posts: 162 ✭✭lithiumoxide


    Looks like an image artefact caused by an out of focus telescope. Similar thing happens if you put a scope out of focus and look through it. Seems to be a double image of the secondary mirror with the mounts holding it in place, similar to the image on this page:

    http://starizona.com/acb/basics/using_collimating_newt.aspx


  • Registered Users, Registered Users 2 Posts: 49 gj777


    great thanks, thought it must be something simple


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