Hello everybody. This is my first post, I am Alessio from Italy. First of all, sorry for my english. I am a "young" amateur astronomer, I have a 10" newton on equatorial mount, and I would like to start with photometry, so I am looking for some SBIG ccd camera...I red a lot of good comments about that... Right now I am in negotiation for used ST-8 XME and a ST-8 XE, both NABG, what is the difference? I know that M stands for Microlens, it means more sensibility, is it something really needed? I have their serial number for the XME, it is 09081700, can anyone tell about its history (when produced, if repaired...)? Are these cameras good for my telescope? What would be a reasonable delta cost between XME and XE? Thank you.