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Bird
Carpal Tunnel
Reged: 08/07/03
Posts: 2621
Loc: Canberra, Australia
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Re: DMK takes on Skynyx 2-0
10/11/07 02:07 AM
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Ron, it's the other way around - smaller pixels make the image larger, increasing the effective image scale.
There's also the issue of noise, traditionally smaller pixels mean an increase in noise levels. Some cameras have a pixel size around 4.5 microns, which is about as small as you'd practically want to go.
The Toucam and DMK21AF04, and all other cameras using the sony ixc098bl sensor have a pixel size of 5.6 microns.
The Dragonfly2 / Dragonfly Express and some other SkyNyx models have pixel sizes of 7.4 microns.
The lowest noise / highest sensitivity camera that I personally have seen and used is the Dragonfly2 from www.ptgrey.com. I bought one last year, and it's the camera I used for the June 22 Jupiter image posted elsewhere.
cheers, Bird
--------------------
Deep Sky Optics 13.1" f/5.5 newtonian,
PGR Dragonfly Express, PGR Dragonfly 2
RedHat Linux + Coriander
http://www.acquerra.com.au/astro/
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