Main camera

		CCD size 		 1024x1024 pixel (24.6x24.6 mm)


Pixel size 		 24$\mu$m 


Binning 		 1x1-8x8 (image sizes: 1024x1024 - 128x128 pixel)


Read-out times 		 35 - 2 seconds 


Read noise (e$^-$) 		 15 


Gain 		 4.25 e$^-$/ADU (Apogee) / 3.85 e$^-$/ADU (Hühn) 


Operating temperature 		 -40$\pm$2 C 


FOV Main camera		 324x324'' (5.4'x5.4')


Resolution 		 0.32-2.5''/pixel  dependent on binning


Linearity 		 up to 60000 counts 

Figure: Linearity of the main camera CCD. Median count levels measured over the full frame are displayed as function of exposure time. Exposures were taken without filter. The scatter around the regression line is 140 counts.