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during long exposures to avoid star trailing. This 5-element guiding eyepiece has a reticle pattern that is a .0075" double spaced line system. The optics are multicoated for increased contrast and have long eyerelief. The high power is ideal for guiding and it has a 50° apparent field of view. This type of reticle pattern allows you to position the guide star in the middle square or at the intersection of two lines, whichever is easier for you. An optional illuminator is required.

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exposures to avoid star trailing.The 5-element Celestron 10mm Plössl Reticle eyepiece allows you to use the directional controls on your telescope's controller to keep a guide star stationary during long exposures-avoiding star trailing within your images.  The high magnification provided from the 10.0mm focal length is ideal for guiding. This eyepiece's reticle pattern is a 0.0075" double-spaced line system, allowing positioning of the guide star in the middle square or intersection of two lines at your discretion.