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Old 13-08-2011, 09:07 AM
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Gem (Grant)
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Join Date: Mar 2011
Location: Canberra, Australia
Posts: 926
Read noise on CCD cameras... lower or higher is better?

Hi all

When comparing cameras... I assume a lower value is better? However, looking at the ATIK range, the more expensive cameras have higher values - which goes against my impression. The new Celestron CCD has 13e- read noise. Is that worse than an ATIK with 3e- or 7e- ??

Any help??
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