LEDAS 
Leicester Database and Archive Service
 
Mission
    Description
ROSAT Guest
    Observer Centre
ROSAT Results
    Archive
ROSAT WFC Data
    Distribution Service
WFC Survey
    Image Browser
ROSAT Databases:
    Complete List
ROSAT Gallery
Related Sites
ROSAT Databases
  ROSPUBLIC
  ROSWFCPUB
  ROSMASTER
  RASSBSC
  ROSHRI
  WGACAT
  RASSIMAGES
  View ROSAT DBs
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Downtime expected shortly as all LEDAS services are moved to a new server.
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ROSAT-WFC Overview

The British Wide Field Camera (WFC) on the German/US/UK ROSAT spacecraft consists of a 5-degree diameter field of view EUV telescope with a curved microchannel plate detector at the focus. The WFC is coaligned with the German X-ray Telescope.

ROSAT performed a 6-month all-sky survey in the interval July 30, 1990 to January 25, 1991, during which 96 percent of the sky was covered. During the survey two filters in the WFC were alternated daily to provide two EUV passbands. These were S1 [60-140 A (90-206 eV)] and S2 [110-200 A (62-110 eV)]. Sky coverage was greatest at the ecliptic poles, where integrated exposures reached 70,000 seconds in each filter; at the ecliptic equator exposures were lowest, being around 1,500 seconds per filter.

 
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