Technical: Canon EOS 7D, 1/2000 sec, focal length 135, f29
Shooting the moon, at least I assume it’s the moon is a problem. The moon is brightly lit by the sun. And, no, you cannot use any kind of flash. The exposure is therefore like shooting in daylight. The problem is that moon is far away [I bet you knew that] and usually only fills a small portion of the image frame. The camera will tend to meter and overexpose the moon resulting in a bright spot with no detail or texture. I have written on the exposure in previous posts. I would start at f11 and 1/250 sec. If you want to make the shutter slower then you must make the f stop a larger number [or smaller opening].
During an eclipse things are just that much more difficult. Lately I have used a tripod and then gone to manual exposure. I will adjust and inspect each image for sharpness and exposure. With the LCD and a large memory card, the experiment can be checked right on the spot.
Here David got a simple crescent. I have been fortunate enough to get an eclipse in New York where the ambient city lights enhanced the cloud cover so that I got clouds as well as the moon in eclipse. The exposure requires a lot of juggling and a good tripod. For a reference see my post of 11/22 and 11/23/11 where I discuss the sun and moon.