I will second that... about moon shots not being easy.

The first shots (the large ones) are with a 1000mm cheap lens mounted to a Pentax K20D. The lens is why it took me many attempts over several years to get a decent shot. The lens is totally manual. I get no exposure info nor focus indication with this lens. It is all trial and error.

The small shot is with a 300mm autofocus lens. It is much easier to take shots with it, but the image is much, much smaller.