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SharpStar 121SDQ Quintuplet f5.6
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25-01-2021, 03:24 PM
gregbradley
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Join Date: Feb 2006
Location: Sydney
Posts: 17,902
There are lots of scope makers who are using FPL53. Some high end ones use FPL55 like CFF.
AstroPhysics, Takahashi, TEC, Wiliam Optics, Stellarvue, CFF for starters.
TEC have swung away from FPL53 in recent years and now only offer Fluorite.
Greg.
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