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Equally suited to observation and astrophotography, the FF131 APO Refractor Telescope from ZWO features a quadruplet air-spaced apochromatic lens system that eliminates the need for a separate field flattener. The quad…

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Equally suited to observation and astrophotography, the FF131 APO Refractor Telescope from ZWO features a quadruplet air-spaced apochromatic lens system that eliminates the need for a separate field flattener. The quad APO includes one extra-low dispersion element and dramatically reduces chromatic aberration. It also eliminates the need to calculate back focus distance—just attach your camera with one of the four included adapters and you're ready for imaging. The 131mm aperture, f/7.5 focal ratio, and 983mm focal length collect the light needed for long-exposure, deep-sky photography, but add a diagonal with a high-magnification eyepiece and the scope is ideal for planetary observation.
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