Today’s cameras surpass the old king by more than on order of
magnitude, be it in number of pixel (C3-61000 has 38-times more
pixels) or sensor area (C4-16000 surface is 11-times greater). Not
only the size and number of pixels of newer sensors, but also lower
read noise, field uniformity, anti-blooming, download speed and other
parameters pushed the KAF-1600 based cameras out of the spotlight long
time ago.
But KAF-1600 kept its place in one important area — astronomical research. Very high quantum efficiency and
perfectly linear response to light, as well as huge pixel capacity
leading to great dynamic range resulted to precise photometric
measurements. Rather high read noise was not an issue, as other noise
sources like sky glow overshadowed it (filters used for photometry
have rather wide passbands). Even the best current CMOS detectors have
hard time to equal these parameters.
M42 Great Orin Nebula (left) and Rosette nebula (right),
taken with G2-1600 on 80 mm refractor
KAF-1600, like other commercially available CCD sensors, are no
longer manufactured. CMOS took over all amateur cameras, even the ones
used for research. The greater surprise were images taken and
processed by Stefano Tognaccini and Marco Burali. They use one of the
very first G2-1600 CCD cameras ever manufactured to capture really
stunning portraits of famous deep-sky objects. Great tribute to the
old king of amateur astronomical CCD cameras. Thank you!
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