Hi Tommy,
I wonder how much Chinese you can read, and write.
You'd better to let everybody know your scope, camera and exposure data.
The picture you took is pretty sharp, but not enough brightness, I think.
If your computer monitor is set much brighter than normal, the same picture looks OK to you, but not to others. I came across this problem a lot when look at same picture cross different computers.
I can read chinese....but cant really write much. Sorry about this.
Actually I am using 102mm f/5 Ahcromat RFT with nikon CP4500 in this shot.
This is the 2nd version of this moon.
...
I like this second version better.
See, RFT is so much better than SCT in terms of contrast. Look at my C8 moon picture I just posted. Focusing is also a challenge for me with DSLR.