Note followup.

" wrote in
oups.com:

Of noise and such in digital cameras for astrophotography:

mirceaar wrote:
(I am not discussing the Canon CMOS DSLR's on this issue, everyone
interested knows they are the best for this kind of work)

They're not, except maybe the Da.

Would you care to elaborate on that? I expect to make that decision in
the medium term. I have a certain amount of Nikon glass and no Canon
anything. If a Nikon D-80 lets me get reasonably close to a Digital
Rebel XT I will be a happy camper.

The Nikon's workaround for not having the dark frame extracted is,
tho' efficient, quite barbaric IMHO.

Is not about the dark frame but rather about median filtering.
Besides, it can be automated.

How is it automated? A pointer to some information would be fine.

If I know well, the D80 has the possibility to disable this dark
frame extraction feature.

Question for mirceaar:
May I ask where you got that information? It would be of considerable
interest to me to be able to follow-up on it.

- Shankar