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Redcat 91 review by AstroBackyard
Friday, January 3, 2025 by Richard Harris
The William Optics RedCat 91 is an apochromatic refractor designed for astrophotography. Its 5-element Petzval design eliminates the need for backfocus adjustments, providing sharp, edge-to-edge images. The telescope is compatible with full-frame and medium-format cameras, offering a 50mm image circ...
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