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This page lets you browse the maps that Planck has made of the sky at nine microwave and mm-wave wavelengths, using the
Chromoscope interface. The sky looks different when viewed at different wavelengths. As well as the Cosmic Microwave Background, it also shows emission from our own Galaxy and others. Looking at all these wavelengths allows Planck to identify and separate the light from a wide range of objects. If you get stuck, click "Help" in the bottom left.
Using the menu in the bottom left you can switch between browsing the images by frequency or by the various components, as well as adding labels and overlay layers. To more easily compare wavelengths, you can reorder them in the top-right bar.

Chromoscope is kindly funded by the Cardiff University
Astronomy and
Astronomy Instrumentation Groups.