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Hi Adam, The QHY-8 is an obsolete camera now, and is only being sold until old stock is gone.
The replacement is the QHY-8L, and although its a single TEC cooled camera, it still does a very good job cooling. But best of all, its controlable.
All the new QHY cameras have a new thicker front glass filter. This was was two reasons.
1, it helped the reflection issues by the extra AR coating.
2, made thicker so as to help prevent condensation appearing on the outside. Because of the extra glass mass, the condensation was slowed down.
Although its near impossible to prevent condensation on humid nights, regardless of manufacturer, every little bit helps.
These new thicker front filters are available for the older QHY-8, or any camera with a M42 thread. It comes with the Tip Tilt adapter, so you can also align the CCD to the focal plane. Heres the link to it.
If you wish to learn more about it, maybe a personal message, as its getting close to hitting the "TOS"...
Theo
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