[raymo]

I have been astroimaging for over 50yrs; have made the switch to a
DSLR, but I think that it is a little late to go the next step to a CCCD
camera; however, I have a question that I haven't seen raised anywhere,
but that I would like an answer to.
I have bought " Imaging the Southern Sky' which gives all the
exposures that were used, using CCCD cameras that used the popular
KAF-8300 sensor. I understand that CCCDs are much more sensitive than
DSLRs. Can the ISO of a CCCD camera be changed, or are they fixed?
If they are fixed, does anyone know what the ISO is, so that I can
find out what ISO I would have to use with my DSLR to get
equivalent exposures[ always assuming that my DSLR can reach the
necessary ISO, that is]. Thanks in advance.
raymo