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I wouldn't. You pay a fortune for every last bit of QE and if you are taking pretty pictures I have not noticed a reflectance issue with the regular Proline.
If you look at Proline images you will see a little diffraction spike in one spot only on the brighter stars. I am not sure what that is but you don't see it on Microlines. I suspect its something reflecting inside the CCD chamber.
The bigger issue of Proline versus other types like Microline or another brand is weight. Not all scope's focusers can handle the weight without flex. Are you using TEC160FL? Its fine on the Feathertouch 3545. Not sure about the TEC focuser (I would have less confidence in that unless proven).
Greg.
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