Not going to be a deep and/or long thread. I couldn't think of what to call it, so here it is.
Picked up a sweet little Unitron 128. Appears to be an early version. Looks pretty good, except the objective was very cruddy.
So...did I screw up here? I did not want to split the elements, but it was worse than the picture. I disassembled, did a little huff and puff with a squeezable puffer, and then soaked the elements in peroxide overnight. After that, I rinsed them off with distilled water, and let them air dry. I then noticed all of the spots shown in the photos.
The star-shaped marks, I assume, are the results of the fungus etching the class. But, what are the other rectangular marks? Is that coating damage? If it is, how would that have occurred? No touchy by me until after the soaking. Would peroxide cause this?
Also, before disassembly, the Newton rings looked like whorls on a fingerprint, rather than concentric circles. After assembly, new spacers, and nearly myriad re-positions, the rings are about as good as I can get. They are not centered, but are at least round. The cell design seems to be counter-productive to secure and perfect centering and spacing. Any input?
Other than this, it is coming along nicely. It is a sharp looking little scope. I just hope the images are not severely affected. I am sure that it will have an effect, but hopefully minimal
Edited by shredder1656, 14 September 2018 - 08:00 AM.