Fig. 9From: Conceptual design of the optical system of the 6.5m wide field multiplexed survey telescope with excellent image qualitySpot diagrams for the 0° zenith angle in − 30℃ (a) and 25℃ (b). RMS radius ranging with the FOV for the 0° zenith angle in − 30℃ (c) and 25℃ (d). RMS radius ranging with the FOV for the 30° zenith angle in − 30℃ (e) and 25℃ (f). RMS radius ranging with the FOV for the 50° zenith angle in − 30℃ (g) and 25℃ (h)Back to article page