80%10.7%4%3.33%2%
0.61-m f/8 Ritchey-Chretien + ...0.32-m f/9 Ritchey-Chretien + ...0.60-m f/8 Ritchey-Chretien + ...0.6-m f/9 reflector + CCD250.9840, rho cos phi' = 0.850...H11 LightBuckets Observatory, Rodeo | Top 10 Facilities