Dif­fer­ence im­age with map

Difference image with map
Dif­fer­ence im­age with map
Credit: DLR (CC-BY 3.0)

Difference image with map

The first two im­ages show changes in a grav­i­ty wave field with­in a few sec­onds. The black and white points are stars that have not been en­tire­ly elim­i­nat­ed and are, in fact, am­pli­fied by the dif­fer­en­tial imag­ing. The im­age on the far right shows a map of north­ern Scan­di­navia. The red ar­row rep­re­sents the po­si­tion of the DLR Fal­con re­search air­craft at the time of im­age ac­qui­si­tion. The blue dots are ground-based mea­sur­ing sta­tions.

The first two images show changes in a gravity wave field within a few seconds. The black and white points are stars that have not been entirely eliminated and are, in fact, amplified by the differential imaging. The image on the far right shows a map of northern Scandinavia. The red arrow represents the position of the DLR Falcon research aircraft at the time of image acquisition. The blue dots are ground-based measuring stations.

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