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BrendanF
member
Reged: 12/04/07
Posts: 20
Loc: Los Angeles, CA
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Re: Disassemble Astro-Physics Triplet Lens Cell?
08/09/08 02:31 AM
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I hope the cleaning works. The photo is hard to interpret. I have an 80mm refractor that once I thought the front coatings were peeling. After calling and talking to the Mfg, and a simple cleaning and it was back to new. On such instruments (I also have an AP 155EDFS, 1997 vintage), the coatings are so so good that it is hard to say just where the problems are--eyes are not good enough detectors. Just from the picture, though, I would guess the 'bubbles' are front surface contamination and not internal. The reason being that if the front surface was clean, the reflection would be uniform in color and the 'bubble' images would be purple as they would have to be going through the front surface coating also. I'm not sure how the back got dirty...humidity? Of course, it is very hard to tell.
Follow the cleaning directions carefully, spare no supplies (plan on using a lot wipes and/or cotton balls), and you will probably end up with a pristine optic. If there is any remaining issues, talk on the phone to AP--they are friendly and very willing to help fix you up right. There is a good chance they will have you speak directly to Roland if you have some outstanding issues with the optic.
I don't think there is any reason for anyone other than AP to ever take a AP objective apart as long as Roland is alive.
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