Originally posted by sub5runner Wish I knew how to make a tighter crop. Whenever I do it seems like I loose a lot of detail.
You're probably seeing reality. The moon is relatively small in the image, so there's proportionally less pixels involved. The larger you make it, the more obvious the lack of pixels will be. If you crop to half of the original image area then resize for the web, you ought to increase the apparent size of the moon and still have plenty of pixels to work with. But if you went to 1:1 of the pixels and crop that, it's not likely to look very good.
To get the moon to a reasonable size in the viewfinder I had to use a 500mm lens and even then it was less than 25% of the horizontal pixels. With a 135mm lens the moon is probably only occupying 7% of the pixels.