Third Illkirch Survey of Galactic Hydrogen

Joachim Köppen Strasbourg March 2011

This applet shows the results of the third survey at the radio line of atomic hydrogen at 21 cm wavelength, done with the ESA-Haystack radio telescope at the International Space University in Illkirch between November 2010 and February 2011.

The system temperature was about 700 K.

The data are given for each galactic longitude (from 0° to about 250° in steps of 2°) as scans in galactic latitude from -30° to +30° (in steps of 2°), with a coverage in radial velocity from -150 to +150 km/s.

Quick explanations:

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last update: June 2011 J.Köppen