Kutter telescope with toroid primary, building log
Information on Kutter Tri-Scheifspigler telescope - ATM, Optics and DIY Forum - Cloudy Nights
Mark T. VandeWettering: The Kutter Schiefspiegler
Two-mirror tilted component telescopes
Guntram Lampert 🇺🇦 on Twitter: "Jupiter, photographed with my homemade 110mm f/26 Kutter telescope. No ADC was used. Thisi instrument serves primarily for observing and sometimes photographing the Sun. https://t.co/XmELklplzW" / Twitter