Officina Stellare Extreme 1.5x Extender for RiFAst and RiLA
Designed from our master optician Massimo Riccardi, the Officina Stellare Extreme 1.5x Extender for RiFAst and RiLA will bring your powerful RiFAst or RiLA telescopes up to f/5.7 and f/7.8, increasing resolution and keeping the same – tiny – star’s shape.
This 4 lens design reducer is fully corrected for a wide field of 42mm. A KAF 1680X chip can be used anyway, with a small amount of vignetting and quality decrease on the extreme borders. It’s fully diffraction limited from 450nm to 730nm