I am after 13 hrs of polishing my 8" f/6 mirror. Today I have had a chance to play with a Foucault knife for the first time. It was really exciting, I took lots of pictures and got familiar with the tester.
Could you guys take a look at the mirror in the attached series of pictures? Does it have any serious errors at the first sight? I think that I dug too deep hole in the middle, but I may be wrong...
Please ignore my friend's fingerprints on center-down-right part - we couldn't stop looking at heat 'waves' expanding from different parts of our bodies while looking at the mirror
Also, what's the line on 2 o'clock, that looks like a crack? I can't see it neither with magnifying glass nor with laser... :S could it be something inside the mirror?
So is it time to quantify it?
Oh, this was a LED moving light source and the knife was moving from the left hand side.
Could you guys take a look at the mirror in the attached series of pictures? Does it have any serious errors at the first sight? I think that I dug too deep hole in the middle, but I may be wrong...
Please ignore my friend's fingerprints on center-down-right part - we couldn't stop looking at heat 'waves' expanding from different parts of our bodies while looking at the mirror
Also, what's the line on 2 o'clock, that looks like a crack? I can't see it neither with magnifying glass nor with laser... :S could it be something inside the mirror?So is it time to quantify it?
Oh, this was a LED moving light source and the knife was moving from the left hand side.
Attached Image:
8" f/5.9 truss tube newtonian, made from scratch 8)
