Pay in 4 interest-free payments of $674.75 Learn more
Ships within 48 hours · Estimated delivery Aug 4 - Aug 9
browse through the size options and choose the filter with an inside dimension that’s slightly larger than your viewing device’s outer diameter
Optical Design Schmidt-Cassegrain Optical Tube Info: N
Mount: Skywatcher AZ-EQ5GT
Condition: This is a used SkyGuider Pro mount head package with iPolar
and double stars from the city
UltraCat 131 Monochrome Camera browse through the size optionsExpected availability in August 2026. Contact us to pre order. Technical Highlights The Ultra Cat 131 is William Optics most advanced astrograph to date, featuring a massive 60mm image circle to support medium format and full frame sensors: Optics: 5 Element Advanced Petzval (Super ED & Lanthanum glass). Aperture: 131mm Focal Ratio: $f 4. 9 Focal Length: 648mm. Focuser: Patented WIFD (Internal Focuser) to eliminate vignetting and tilt. Included:
US$ 72.00
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US$ 109.95
US$ 2137.50
