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

$Images showing how the Bahtinov mask changes a star's diffraction pattern as the focus changes.$

Image showing a typical Astrozap focusing mask with the Bahtinov wheel in the closed (dust cover function) position.

Image showing a typical Astrozap focusing mask with the Bahtinov wheel in the open (focusing) position.

Close-up of the foam-lined rim and one of the nylon screws that hold the focusing mask in place on your scope and allow it to fit a range of scope sizes.

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

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$78.00

Availability: In stock

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 . . .

SKU: FC105AZ