According to the article I read, they offer the Sigma camera with X3 chip,
up to 1600 ISO setting and 30 sec bulb, very low noise. That's pritty
sensitive. Camera is $3000.

Julius


"Roger Hamlett" wrote in message
...

"Szaki" wrote in message
newslbXb.28388$yE5.103520@attbi_s54...
Would this new chip revolutionise ccd-astronomy also? It uses fulll
colour
layered sensor array!
http://www.dpreview.com/news/0202/02021101foveonx3.asp

Julius
No.
It has been discussed several times in the past. At present, it is
_noisy_,
and sensitivity is very poor. It is possible that in ten years time, a
'third generation' version, _may_ become something of interest to
astronomers.
It is worth noting, that Foveon have their own 'recommended application'
list, and carefully exclude both astronomy, and 'low light imaging' when
talking about this sensor. However they make other sensors, and in some
cases recommend these for such applications.
It is not 'new'. The chip was launched in the middle of last year, and
cameras have been available with the sensor for several months.

Best Wishes