[Dennis]

Hi Paul

Using my current Flat Field box (incandescent torch bulbs, 3.0V IIRC), for flat field values I obtained the following:

ST7E CCD camera, Max value = 65,535 (16 bit camera) with CFW8A filter wheel.

RGB exposures of 3 seconds for each coloured filter:

• Red Filter: 9,725
• Green Filter: 3,854
• Blue Filter: 864

Clear Filter, 1 second exposure:

• Clear Filter: 29,212

Quite a range eh?

Cheers

Dennis