DARREN CARLISLE a écrit :
>
> I take it from some of the reply's that have been posted that if I want a
> CCD for general viewing then a one-shot colour is fine, but if I want to do
> some kind of research ie: supernova, asteroid hunting etc then I should opt
> for a B&W CCD and if I wanted to do some deep sky and planetary work with a
> B&W CCD then you can with the use of a colour filter (wheel). I think this
> is what some of you mean when you talk about photometry and astrometry, or
> am I just being think and talking about something totally different, could
> someone explain for the thickies among us.
>
> Regards
>
> Darren
Roughly speaking you are right. But if you want to photograph faint
extensions of galaxies or nebulae, the black and white CCD camera is
still better (in technical terms, better QE, i.e. sensitivity, higher
signal to noise ratio, i.e. better "details"). For planetary work, you
might want to look into using a modified webcam, very inexpensive, works
great too (and in color ;-) ). In fact would not be that bad to start
using one then switch onto a more expensive CCD camera later.
Alain

View index by [date] [author] [subject]
Previous message: Re: [M]: CCD purchase, Alain Maury
Next message: [M]: Remote LAN - yet more questions, Dave Schanz
Next message in thread: [M]: RE: CCD purchase, Mark de Regt
Previous message in thread: Re: [M]: CCD purchase, Alain Maury