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  1. Astrozap Focusing cap - built-in Bahtinov focusing mask for Celestron 4" or Meade ETX105 Maks

    $78.00
    This Astrozap Bahtinov mask focusing cap fits Celestron 4" or Meade ETX105 Maksutov-Cassegrains, or any scope with an optical tube outer diameter between 110mm and 120mm . . .
  2. Astrozap Focusing cap w/ built-in Bahtinov focusing mask for 9.25" SCTs and similar scopes

    $114.00
    This Astrozap Bahtinov mask focusing cap fits most 9.25" Schmidt-Cassegrains, or any scope with an optical tube outer diameter between 247mm and 266mm . . .
  3. Astrozap Focusing cap w/ built-in Bahtinov focusing mask for 14" Schmidt-Cassegrains and similar scopes

    $185.00
    This Astrozap Bahtinov mask focusing cap fits most 14" Schmidt-Cassegrains, or any scope with an optical tube outer diameter between 395mm and 405mm . . .
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