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Originally Posted by tempestwizz
Cleaning the triplet and the single element did not improve anything, as the grunge can be seen within the triplet. There is no way for disassembly of the triplet. I call it grunge, as with the ability to view the triplet closely by itself, my issue is not fungus, but what appears to be congealed oil between the triplet elements.
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If the element isn't bonded and is held with oil there would be a suitable product you could soak it in the eventually separate the elements. I'm not too sure how complex it would be to replace the oil as it isn't just 15w30 motor oil (or is it?) from the mechanical supply, I honestly wouldn't know what oil it is.
Were you to do some research/have someone here with the knowledge provide the correct information it may be well recoverable.
I would assume there is a set orientation where both glass elements should mate up and perhaps some sort of mark on the edge that wouldn't dissolve would ensure proper orientation should you attempt the repair.
If it's oil the elements wouldn't be bonded as such, old oil becomes like glue I don't believe they are physically bonded (based on what I've read about triplets with oil), it would more be a stiction thing. Were there anyone locally experienced in the procedure it could be worth checking into having dome professionally for a high quality eyepiece.
I'll do a search tomorrow and see if I can find any information.
The oil in the triplets does occasionally have to be replaced from something I read some time back, maybe not always, some are apparently very good over the life time but I have seen mention of oil filed lens cells leaking when the o-rings perish with age.
I'm sorry, as mentioned, I don't get to play with any luxury type equipment so I have no experience but I do know how to do research and if I can find anything out I'll let you know.
I have the time to search but tomorrow, bed time now.