I got this really cool moon photo on March 9th with my Canon 7D Mark II and Canon 100-400mm L II lens. I had been watching planes criss cross the sky one day, and realized if I had my camera out maybe 30 minutes earlier, that I might be able to get a plane going directly across my field of view to the moon. I didn't get one of those, but really loved this one, "Over the Moon!", right as the sun was setting giving some nice glow and color to the moon and sky.
A 400mm lens works out to 640mm equivalent on a Canon APS-C body (focal length x 1.6), and a Canon 7D Mark II body is 20 MP. The cropped final image here is 4.7MP, so still quite a bit of cropping even at 400mm. I'm planning to eventually pickup a Canon 1.4x Extender III, which would put this combination at nearly 900mm equivalent for some even better moon, plane spotting and airshow photos. :)