Why does my beam pattern appear to have “artifacts”, a yellow color in the corona and black line it when I shine it at wall at close range?
The Polarion HID searchlights are factory pre-focused for extended ranges of 150-200 yards and beyond. The beam pattern will not look perfect when shined at a wall at close range. The yellow in the corona (the less brilliant area around the center “hot spot” is a result of the sodium in the lamp itself and is perfectly normal. This pattern will change depending on how you orient the light as gravity moves the gases around. The black line is the shadow of wire that runs parallel to the glass tube of the lamp.
