ATIK Cameras ACIS 7.1 Manual - Página 8

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Even Illumination – The 'Even illumination' determines how the sensor is

cleared between images. With the checkbox unchecked, the whole sensor is

cleared immediately before the exposure begins. This results in a less-noisy

image. However, as the image takes around 67ms to read out, you may see a

slight gradient in the image. This is only likely to be an issue if you are using a

short exposure time (less than a second) or imaging a very bright object.

With the checkbox checked, the image is cleared at the same rate as the image

is read. This results in each pixel being exposed for the same length of time,

but will result in a noisier image.

We recommend keeping this option unchecked unless you are taking short,

bright exposures.

Replacing the Desiccant

Your camera includes a high-performance molecular sieve desiccant tablet

which is used to avoid condensation inside the CMOS chamber. Although this

desiccant will last a long time it may eventually need replacing or recharging, in

which case please follow the instructions below:

To replace the desiccant, open the desiccant port with the supplied plastic

tool and a screwdriver and take out the used tablet.

To recharge the desiccant, place the tablet in an electric oven at 200ºC for

2 hours. Take the tablet out the oven (CAUTION: the tablet will be very hot)

and allow it to cool down.

Place the recharged tablet back in the camera, replace the port cover and

tighten (no need to over-tighten). Wait 24 hours before connecting the

camera again.

We recommend leaving the camera in a warm, dry environment with the port

open while you are recharging the tablets to ensure any remaining moisture

can dry out.

You will notice that there is a filter inside the desiccant chamber. The purpose

of this is to avoid contamination of the chamber when the desiccant is being

replaced. The filter is very fragile and should not be touched.