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Yes, the 20X90's were advertised as triplets originally for quite some time, but later they dropped the "triplet" description. I bought a pair from Andrews and found out later they weren't triplets! I could have had my money refunded, but in the end, they worked really well, so I didn't want to send them back. Compared with Celestron 25X100 Skymasters, the 20X90's were sharper, and less colour problems, although not quite as bright an image of course. That's why I kept them.
They are heavy though and definitely need a good mount. Triplets should be better though, assuming good design and materials.
Clear skies,
Nick
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