These pictures were taken almost a month later than the thumbnail picture. The atmospheric conditions were still bad. Part of the field distortion is due to the image not being in the same location in the camera field every time the time delay shutter snapped.

More magnification won't always help.

BACK to 8_inch-b.htm

Figuring 12.  Knife edge testing at the radius of curvature.

BACK to 8_inch-b.htm