Lunar terminator taken by Mark Payne, 22nd January 2010. Shot using a Skywatcher Equinox 80 Pro APO Refractor with stacked Canon EF 1.4x & 2x extenders to give a focal length of 1400mm (~f/17.5) at prime focus

Lunar terminator taken by Mark Payne, 22nd January 2010. Shot using a Skywatcher Equinox 80 Pro APO Refractor with stacked Canon EF 1.4x & 2x extenders to give a focal length of 1400mm (~f/17.5) at prime focus

Lunar terminator taken by Mark Payne, 22nd January 2010. Shot using a Skywatcher Equinox 80 Pro APO Refractor with stacked Canon EF 1.4x & 2x extenders to give a focal length of 1400mm (~f/17.5) at prime focus

Lunar terminator taken by Mark Payne, 22nd January 2010. Shot using a Skywatcher Equinox 80 Pro APO Refractor with stacked Canon EF 1.4x & 2x extenders to give a focal length of 1400mm (~f/17.5) at prime focus