Hi All,
I used to have a telescope a few years back, but sold it due to it not having the chances to use it (Got married!
).... But, when I did have it, I had a filter set and one of those filters was for observing the moon specifically.... It was quite a dark grey / green colour and just gave enough contrast to see the details on the surface of the moon.
It could be worth contacting a telescope supplier, and asking what specs the moon filters are and seeing if there is a suitable equivilent one for cameras.
Unless you use a low power telescope, observing the moon is best done with a camera + tripod or Bino's, as telescopes are like lenses and tripods.... Cheap just wobbles and won't give clear images.