[solissydney (Ken)]

How to create a shadow, similar to a partial eclipse, on the full Moon ?.
I need to take an image of the full Moon, together with a few stars on the same image.
If, i could create an artificial shadow on part of the Moon would making the inclusion of a few stars close to the Moon much easier than just taking care with the exposures.
I have tried creating a shadow by placing a small black piece of cardboard close to the lens, and also further away, even a couple of meters away. It needs to be in focus in order to be sharp and that I have been unable to achieve.
Any ideas on how to create such a shadow?