Quote:
Originally Posted by sopticals
Hi Bruce, 
thanks for sharing your project. Any updates would be appreciated.
Best regards
Stephen.  |
I'm afraid any updates will be few and far between. I'm moving house in the middle of the year and this takes back seat to the preparations for that.
I put in a couple more hours with the old lap and it seems to have done the trick. The edge isn't perfect, but it's much improved, and I think the last bit will correct itself as I start figuring. The laser test is good and no more speckles are to be seen.
I've attached a comparison of fringe images from before and after the last session. You can easily see the hook at the edge before, but not no much now. I've also attached a Ronchi image - not perfect, but the zones are minute when I look at how much parabolising I have to do.