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gromit said:
It looks like a astronomy site. The options to do this are:
Several pictures overlaid using photoshop, using special color filters. Exposures up to 60 minutes per color are not unusual for astro photos.
Most likely a long exposure, or several short and each stike colored in photoshop.
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I say several shots combined together. A 60 minute exposure would over expose the picture with the lights. Astronomical photos are taken in space, which is a lot darker then terrestrial shots.