ATIK Cameras 3 Series Gebruikershandleiding - Pagina 7

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3.8 Cooling

Atik cameras are thermally stabilized to allow your CCD to output the best result that

it can deliver. The very low readout noise, combined with efficient cooling, means that

dark frames are not necessary in most situations, allowing you to spend more time

imaging and less time taking calibration frames. If very long exposures are to be used

or high precision data is required (exo-planet searches, for example), dark frame

libraries will be easy to maintain.

The cooling delta varies between models and full specifications are available in the

Technical Information Summary on page 7. Please note: the cooling delta is how far

below the ambient temperature the camera can achieve, rather than a fixed

temperature it will cool to.

The Atik 314L+ has a regulated cooling system, meaning that the CCD is kept at the

desired temperature throughout the imaging session. After switching on the camera,

it is advisable to allow at least 2 minutes before taking images in order to allow

the temperature to stablilize.

3.9 Replacing the desiccant

Your camera includes a high-performance molecular

sieve desiccant tablet which is used to avoid

condensation in the CCD chamber. Although this

desiccant will last a long time it may eventually need

replacement 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 90 minutes. Take the tablet out the oven (CAUTION: 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.

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.

Page 7

Desiccant Port