Script: Graph sensor SNR (db) vs. input illuminance (lux-sec) or To run this script, you should first use the GUI to create a uniform scene and calculate the optical image. Make sure that the off-axis fall off is turned off or else this variance will be counted as part of the sensor variance. Then, set up your sensor parameters in the sensor window. Then, run this script. The output figure shows the sensor SNR (db) as a function of lux-sec; It is also possible to show SNR vs. sensor voltage, though this figure is commented out in the script.