amatuer radio astronomy

I have a 1.2 meter offset sat dish and a 0.2dB LNB head.
So far all i get is the sun (at +9dB) and the moon (at +0.7dB). These
mesuarments are refered to quite sky.
Ground noise is 5dB.
Can I expect to get anything else? Or must I get a larger antenna?

The moon noise can be seen he http://home.no.net/jhhl/egne/moon.pdf

Jan Lustrup,
Stavanger, Norway