[Pre Order - allow extra time] Sky-Watcher 0.77x Focal Reducer / Flattener for EvoStar 150DX f/8 Refractor For Astrophotography/Astroimaging, Virtually Eliminate Spherical Aberration, Shortens Focal Ratio from f/8 to f/6.2, Reduces Exposure Times by...
[Pre Order - allow extra time] Sky-Watcher 0.77x Focal Reducer / Flattener for EvoStar 150DX f/8 Refractor For Astrophotography/Astroimaging, Virtually Eliminate Spherical Aberration, Shortens Focal Ratio from f/8 to f/6.2, Reduces Exposure Times by...