Second Illkirch Survey of Galactic Hydrogen

Joachim Köppen Strasbourg Oct. 2010

This applet shows the results of the second 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 July and September 2010.

The system temperature was about 1000 K or somewhat worse ...

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: Oct. 2010 J.Köppen