A Lens Shade or Dew Cap is a tube, of approximately the same diameter as your telescope tube, designed to fit on the front end of the telescope to reduce the amount of dew that builds up on the corrector plate. It also serves as a Lens Shade by preventing stray light from falling on the corrector plate, which greatly improves contrast.
Made from a lightweight flexible material this dew shield will fit all Celestron 11" SCT telescopes including the CPC1100.
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