QHYCCD QHY12 User Manual
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What if dew forms on the surface of CCD chip?
DC201 Input Voltage Range
The DC201 requires a regulated 12V input. The
normal input range is 11V-13V. If you exceed
13V- common when you are using an external
battery, the higher voltage will reduce the life of
the TEC and Fan. If you exceed 13V, please limit
the maximum power of your Cooling Settings. This
can be controlled via “ TEC PROTECT ”
in
the“Favorite” menu of EZCAP. Please select it. If
you are using the ASCOM driver, this has been
set automatically.
Service Temperature and Humidity of Camera
Service Temperature of QHY10/12 is from -20C/-
4F to +30C/86F.
Relative Humidity amount is from 0% to 90%.
How to avoid CCD sensor moisture in high
humidity environments
In certain environments, when the temperature of the
camera drop below the dew-point, dew or ice may
form on the camera. This is simply a law of nature.
However, ice and/or dew which form on the surface of
CCD chip or optic window will impact your images. If
dew or ice forms on the surface of CCD, the water can
flow onto the electric board, which leads to short
circuit or data corruption. It is critical that you avoid
dew or ice formation during operation on the CCD
chip.
The internal space of CCD camera is relatively airtight.
If dew forms on the surface of CCD chip, this indicates
that there is higher relative humidity in the CCD
chamber. You must dry the chamber using the
following method:
1. Screw off the air socket screw on front part of CCD
sealed chamber
2. Put fresh silica gel in silica gel tube. Before putting
silica gel, a small piece of cotton is needed to create a
barrier between the hole in the tube and the
chamber.*
* Desiccator must be effective.