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Orion pulled it off.
I was utterly suprised that the Orion has FAR LESS color than a Megrez. In fact it rivals the Takahashi FS-78. I know this because I had all three scopes on the same daytime artificial star. I would place it in the same league as the Tele Vue 76, which is somewhat more colorful that the FS-78 due to its faster F#. Hats off. More importantly, the wavefront is very good. The "correction" of spherical abberation is very good, 1/8 wave or even better, just a hint of overcorrection. The fresnel rings are pleasingly round, and the focus "snaps". From the manual, the tube is aluminum; the focuser has about the same feel as the Megrez. The 1/4-20 block is set a little too forward, best balance will be with a 2" diagonal. Or 4" rings can be used. What else do Synta and Orion have up their sleeves? |
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