US National Parks Service Tests Fisheye Lenses for ALAN Measurement

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A new camera system using a Sony IMX455 CMOS, ZWO ASI6200MM camera, a Johnson V filter, and a Sigma 8 mm F3.5 fisheye lens with computer-assisted calibration. The new camera rig can capture a more detailed view of the sky in a tenth the time of the system at White Sands National Park.