The PACS instrument on Herschel has taken the observatory’s first images, of the galaxy M51, and they’ve just been released.
Here’s a three colour image at the PACS wavelengths (70, 100 and 160 microns):
You can find more imaformation and more images at the ESA Website.
The telescope and instrument have yet to be fully tuned, but these images are already spectacularly good. Herschel is going to be doing great science!