Celestron SkyMaster Pro 15x70 (Image credit: Celestron) These are our best binoculars for moon views. The 15x magnification and 70mm objective lenses deliver sharp contrast along the terminator and lunar details that pop, but make sure you grab a tripod for steady views. _ Celestron SkyMaster Pro 15x70 review A trick of the light will make a colossal "X" and "V" appear on the moon overnight on May 23-24, as sunlight catches broken crater rims along the line separating night from day. Here's how and when to find the striking "clair-obscur" effect. The face of the moon never looks the same from one night to the next, as the shifting angle between the moon and sun causes sunlight to sweep across its surface, altering the shadows cast by craters, mountain ranges and ravines. Our brains are predisposed to find familiar shapes in the heavily cratered lunar landscape, giving rise to so-called "clair-obscur" effects — a name derived from a French word for light (clair) and another for shadow (obscur).…