Accessory · 2015–
Sky-Watcher Quattro Coma Corrector

Key specifications
| Accessory type | Flattener/Reducer |
|---|---|
| Weight | 0.31 kg |
| Back focus | 55 mm |
| Factor | 1 × |
About
Coma corrector (with mild reduction) matched to the fast f/4 Quattro imaging Newtonians, removing off-axis coma for pinpoint stars across the frame; M48 threads with 55mm back focus. (On the Quattro 150P it yields f/3.45 / 518mm.)