The Effelsberg-Bonn HI Survey (EBHIS)
  The Effelsberg-Bonn HI survey (EBHIS) comprises an all-sky survey north of
Dec = -5 degrees of the Milky Way and the local volume out to a red-shift of z
~ 0.07. Using state of the art Field Programmable Gate Array (FPGA)
spectrometers it is feasible to cover the 100 MHz bandwidth with 16.384
spectral channels. High speed storage of HI spectra allows us to minimize the
degradation by Radio Frequency Interference (RFI) signals. Regular EBHIS survey
observations started during the winter season 2008/2009 after extensive system
evaluation and verification tests. Until today, we surveyed about 8000 square
degrees, focusing during the first all-sky coverage of the Sloan-Digital Sky
Survey (SDSS) area and the northern extension of the Magellanic stream. The
first whole sky coverage will be finished in 2011. Already this first coverage
will reach the same sensitivity level as the Parkes Milky Way (GASS) and
extragalactic surveys (HIPASS). EBHIS data will be calibrated, stray-radiation
corrected and freely accessible for the scientific community via a
web-interface. In this paper we demonstrate the scientific data quality and
explore the expected harvest of this new all-sky survey.
