Third Illkirch Survey of Galactic Hydrogen


Joachim Köppen Strasbourg March 2011/Jan.2018


Some brief explanations

This tool 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 November 2010 and February 2011.

The system temperature was about 700 K.

The data were taken by measuring each galactic longitude (from 0° to about 250° in steps of 2°) and galactic latitude from -30° to +30° (in steps of 2°) for 10 min, with a coverage in radial velocity from -150 to +150 km/s. The results are shown as:


dataset: glong range:


show: vrad = glong = glat =


Mouse position:



| Top of the Page | Java Applets Index | JavaScript Index | my HomePage |