Practical Prime Focus Eyepiece Projection

updated: 2022-06-26

Important: min. distance between eyepiece and sensor chip:

  • APS-C chip cameras:        min. 20 mm
  • full format cameras:        min. 40 mm

Always add around 55mm on the telescope side to place the eyepiece shortly behind the primary focus point of the telescop6,2e.

Prime Focus Eyepiece Projection Example:

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