It took two nights to get this image. This is about 5-6 hours of polishing of the 6 inch f/4.79 mirror. I started this like 7 years ago. There’s some surface roughness and I’m planning on switching to either red rouge or high quality cerium oxide for figuring. My knife edge is coming from the left side in a janky way. There also a kind of hole? I think.
Occasionally, I would see astigmatism but there's about 1.5 to 2 inches of vertical distance between the light and camera. So that could be test stand astigmatism. I probably should do 2-3 hours of general polishing next with the new polishing agent.
