Thanks Jo. That's not so easy. First off... I always ignore the exposure meter for astro shots. The only time it seems to get close is shooting the moon during the day. My meter is always reporting at least 2 stops under exposed. For any Astro shot, I always use the aperture wide open, Astronomy is about gathering as much light as possible, probably not necessary on the moon, but it's now a habit I've gotten into, and when I mount the camera on my scope, I can't adjust the aperture anyway. Then I adjust the shutter speed to get me a decent exposure. This will depend on a lot of factors, but the full moon in the dark sky is normally about 1/160 - 1/200 and going down from there depending on the phase. I always use ISO100 for the moon to minimise noise, it's a bright enough target that higher ISO is unnecessary. To get a decent moon pic, if you want close up detail, ideally you want to wait until it's as high in the sky as possible (less atmosphere for the light to pass through, reducing atmospheric interference). Hope that helps somewhat. Do you have examples of your images, I'm sure someone will be able to provide better advice if you post them up with the kit used.