Those are a pretty good effort for first attempt , my advice is grab a better 3x GSO ( minimum ) barlow , as I see it all the problems with these are induced by that E/bay 5x barlow as the scope and camera are of good quality .
Raymo , I find my iStar 127mm f8 achromat and Sony alpha DSLR take awesome luna shots , the larger one is at 2000mm using a 2x TV powermate , and the smaller one is native 1000mm not to much wrong with these I think .
The 3rd shot is probably my best , this is only cropped and resized , taken with the above gear at 1000mm .
They are untouched .
Visionary , I hope this gives you something to shoot for (
pun intended ) as shooting the moon is very satisfying .
Focus is the hardest part I find , but with todays cameras we just shoot , focus , shoot focus , over and over , taking notes and measurements on the focuser and after a while you will learn the point of best focus , it is not as hard as it sounds , also don't use the cameras screen as they all look good when seen on the small camera screen , download into your computer and view them on the big screen and you will see subtle differences in each shot , best of all just enjoy it .
Brian.