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Hmmm. Interesting. I'm at a loss on how a telescope can give reasonable views & then deteriorate over a period of time to a point that you can see.....as you explain. Or did this suddenly happen? Did you give it a hard knock at any stage?
Sounds like collimation to me. Never actually heard of that brand. I would hesitate to say it's a piece of you know what. Gonna do a bit of googling & see what I can come up with.
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