Originally Posted by joecool
More important to you may be to have a bright, wider field of view with a sensitive guide camera so you can always find suitable guide stars with good SNR.
How sensitive do you mean? I use a QHY5. Does that count as sensitive enough?
Thanks all for the replies. I found when I imaged at 400mm and guided at 2350mm my tracking was great. Now I am guiding at 400mm and imaging at 1480mm.. it just isn't as good... many factors I guess.