Cleaning - ZWO ASI294 Series Manual

ASI294 Manual

7. Cleaning

The camera comes with an AR protect window, which can protect the sensor from dust and
humidity. Should you need to clean the sensor, it's better to do so during the daytime. To see the
dust, you just need to setup your telescope and point it to a bright place. One barlow lens is
required to see these dusts clear. Then attach the camera and adjust the exposure to make sure not
over exposed. You can see an image like below if it's dirty.
The big dim spot on the image (at right) are the shadows of dust on the protective window.
The very small but very dark spot in the image (at left) are the shadows of the dusts on the sensor.
The suggested way to clean dust on protective window is try to blow them away with a manual air
pump. To clean the dust on the sensor you will need to open the camera chamber.
We have a very detailed instruction on our website:
https://astronomy-imaging-camera.com/manuals/
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