Sky-Watcher S20204 Quattro Coma Corrector Black for f/4 Newtonian Astrographs Astrophotography
Sky-Watcher S20204 Quattro coma corrector in black for f/4 Newtonian astrographs.
Price range: See on Amazon
What we liked
- + Matched to Sky-Watcher Quattro f/4 astrographs
- + Removes coma for pinpoint stars in fast Newtonian imaging
- + Official accessory ensures correct back focus
Trade-offs
- - Designed for f/4 Newtonians, so slower scopes may not benefit
- - Limited appeal outside Quattro owners, since spacing is tuned for that design
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