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William Optics RedCat 61 WIFD
51mm 4-elements Petzval refractor 300mm focal length - f/4.9 focal ratio 46mm image circle - No field flattener required WIFD focuser design ...
View full detailsWilliam Optics Redcat 71 WIFD
71mm APO F/4.9 Fast Focal Ratio Portable and Versatile Description Specifications In the Box Unleash your passion for astrophotography with ...
View full detailsWilliam Optics UltraCat 108 f/4.8 WIFD
William Optics UltraCat 56 f/4.8 WIFD
William Optics UltraCat 76 f/4.8 WIFD
William Optics Zenithstar 61II APO
61mm APO using FPL-53 Glass F/5.9 Fast Focal Ratio Portable and Versatile Description Specifications In the Box Unleash your passion for ast...
View full detailsWilliam Optics Zenithstar 81 WIFD Telescope
ZWO FF107-APO Quadruplet Refractor F/7
Aperture of 107 mm Focal Length of 749mm Focal Ratio of f/7 Quadruplet APO Full Frame Imaging Circle Supported No need for flattener No need to ca...
View full detailsZWO FF130-APO Quadruplet Refractor F/7
Aperture of 130 mm Focal Length of 1000mm Focal Ratio of f/7.7 Quadruplet APO ...
View full detailsZWO FF65-APO Quintuplet Refractor F/6.4
Quintuplet air-spaced APO F/6.4 416mm focal length 65mm aperture ...
View full detailsZWO FF80-APO Quadruplet Refractor F/6.4
Quintuplet air-spaced APO High-quality ED glass Small and round stars Support full frame cameras 44mm image circle Description Specifications I...
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