How is the SC2 chip sensitivity compared to the guide chip from the ST series cameras? On the ST cameras I have ( ST10xx and ST2000xx ), I loved the fact that if I binned 3x3, I could set the AO8 to 10 Hz and guide off a 12th mag star. If I went to 5 Hz, I could use a 14th mag star. I'm kind of hoping for the same thing. Thanks, Carl.