Specifications

The silica-gel container is accessible from the back side of the camera head.
The slotted desiccant chamber cap can be unscrewed e.g. by a coin. Pour
out wet silica-gel and fill the chamber with a dry one.
The desiccant container can be left open without the fear from
contamination of CCD chamber interior by dust. There is a very faint
stainless steel grid between the CCD chamber and the desiccant container,
so dust particles cannot enter the chamber itself. It is even recommended to
keep the desiccant container cap off for a couple of hours when the camera
is in the room with low humidity. This helps drying the CCD chamber
interior and prolongs the silica-gel exchange interval.
The desiccant chamber used in G3 cameras can be filled with a hot silica-
gel without a danger of damaging of the container.
Changing Filters
It is necessary to open the camera head to change filters or the whole filter
wheel of the G3 camera. Opening the head is quite simple – it is just
necessary to unscrew she eight bolts, which holds the camera head together.
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Illustration 25: Silica-gel container is under the screwed cap with slot, left from the
cooling fans