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Kowa 82 series prisms query
These prisms have now been cleaned and the scope reassembled. It was very difficult to get rid of all the dust specks on reassembly. I was wondering if it's worth getting it nitrogen filled again or to just leave it as is? Also I'm thinking of getting the Baader MkIV zoom. At present I use... -
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Kowa 82 series prisms query
Would silicone grease be better than lithium for the focusing thread? -
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Kowa 82 series prisms query
Joachim, I am indebted to you. The prisms have indeed cleaned up albeit with a lot of elbow grease. I am so grateful. I took pictures of them before cleaning but there's no need to post them now. Many thanks to Henry and Binastro too for their advice. I think the araldite may have caused the... -
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Kowa 82 series prisms query
I've heard back from the Kowa repairers and they have heard back from Kowa Germany who say the parts from the Kowa 82sv don't fit the 824. Kingsview said they don't really do the repair I want. A BF member may be able to help me though so that sounds promising. An ebay search has proved... -
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Kowa 82 series prisms query
Thanks, that's interesting. I'm waiting to hear back from the official UK Kowa repairer. I think you hit the nail on the head there. I think I used Araldite epoxy internally and re-sealed the scope up prematurely on the original break. I'm pretty sure the prisms were ok prior to the first... -
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Kowa 82 series prisms query
Thanks for that Henry. Before the second break the prisms seemed misty. Maybe because the nitrogen escaped. The top one nearest the eyepiece was "cleaned", I thought carefully after the second break but it seems to have made things worse. The prism nearest the objective, the focusing one seems... -
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Kowa 82 series prisms query
Following another scope mishap the prism housing on my old 824 has cracked and now been re-glued/epoxied. Whilst cleaning the prisms I noticed the coating has been impaired and they now need to be replaced. Does anyone know if the two porro prisms in the angled bodied 821/823 are identical to...