Table 1. Specifications of the first prototype HARP–FEA camera.

Pixel size (µm)	20 × 20
Number of pixels	640 × 480
Frame rate (frames s−1)	30
Membrane thickness (µm)	15
Maximum avalanche voltage (V)	1600
Effective area (mm)	12.8 × 9.6
Digital data range	12 bit
Image format	16 bit TIF
Readout method	HEED/Spindt-type FEA
Output	VGA