Published online by Cambridge University Press: 25 May 2016
The aim of DENIS is to map the southern sky in three near-infrared photometric bands (I, J, Ks) at the 1mJy sensitivity level (14th magnitude in Ks ) and arcsecond resolution using the ESO 1 meter telescope at La Silla, Chile. The DENIS operations have started in December 1995 after a protosurvey period of one year mainly dedicated to technical tests and pilot surveys of selected regions of high astronomical interest. In September 1996, approximately 3000 square degrees of the sky have been covered, and the survey should be completed in 1999.