Northern Lights are always occurring, however, they are only viewable when lower levels of light pollution occur, and typically on clear nights in September through April in the Northern Hemisphere. The aurora borealis and aurora australis, the northern or southern lights, are caused by particles escaping from the sun, a phenomenon known as solar wind into space. The…
Tag: digital noise
Experiments with Digital Noise
Photographing scenes where the light is very low can produce digital noise levels that can result in pixels which include more noise data than real photo light data. In digital photographs, these pixels usually appear as random dots, speckles or stains. In addition, the image quality may be compromised by the resulting image artifacts, loss…