Your subject heading said the moon. Your exposure values are going to be similar to daytime photogrphy. The usual problem is too much light. You can try moon filters and so on to get contrast. Try when he moon is not full. and look at the edges where the sun is grazing the edges of the craters you get the most interesting shot.
Yes, shot and try, you can always scrap the rubbish. But yes focussing is a problem.
Roger
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