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Dwingeloo Obscured Galaxy Survey

(radio survey of ZOA for 21-cm lines indicating galaxies)

The Dwingeloo Obscured Galaxy Survey (DOGS) is a late 1990s radio survey of the zone of avoidance (ZOA) that found galaxies by spotting 21-cm line emissions indicating their HI regions. It was carried out on the 25m Dwingeloo Radio Telescope at the Dwingeloo Radio Observatory in the Netherlands.

Further reading:
DwingelooDwingeloo 1