List of products by brand William Optics

William Optics Apochromatic refractor AP 71/350 RedCat 71 WIFD OTA
1857.45 $
Tax included
The AP 71/350 offers a remarkable balance of compact size, affordability, and superior optical quality, making it an excellent choice for both astronomy and nature photography. Its optical system is based on a Petzval design with 4 elements in three groups, utilizing FPL53 and FPL51 glass. This setup delivers a richly colored, fully corrected image field with a diameter exceeding 45 millimeters—ideal for full-frame cameras!