QHYCCD QHY168C, Руководство пользователя, Страница: 19 / 27

QHY168C
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7) Avoid the statics. Sometimes the static electricity on human body will cause the camera to
hang. You can touch the computer metal case for first before touch the camera to let the
static electricity on your body release.
8)
Some computer's front USB port is not so good for high speed transfer (The reason is it
connected to mainboard by a cable and which has no good signal integrity). If you found the
camera always hang on front USB port. You can try the USB port on backside of the
computer (which is connected to chipset directly on the mainboard).
4. How to clean the CMOS sensor and the optic windows of the camera?
If you found there is dust on the CMOS sensor. You can screw off the front part of the QHY168C.
The QHY168C's CMOS sensor has the AR coating so you need to be careful to clean it. You can use
the clean kit for DSLR sensor to do it.
The optic window has AR coating. So you need to be careful when cleaning it. You can also use
the DSLR clean tools or the lens paper. Don't use strong force to clean it. The coating is not so
hard and it is easy to get scratch when you use strong force on it.
Note that, the optic window doesn’t have IR coating, because the IR coating in this position can
easily cause halo around bright stars. If it’s needed, you can install the infrared filter by yourself.
Please check the “QHY168C Connection Combination Table” on
http://www.qhyccd.com/QHY168.html for the assembly diagram.
5. How is the anti-amplifier function in QHY168C?
QHY168C camera has the anti-amp light control circuit and it can reduce the amplifier glow
significantly. Note that it's impossible to reduce the glow in the corner thoroughly, and it's normal
to see a very small amount of glow in the corner when you do long exposure.
This is a demo picture for the QHY168C glow in 60sec exposure and high gain. Dark frame
calibration can remove it completely.