noctilucent clouds Panu Lahtinen Image taken: Jul. 17, 2008 Location: Espoo, Finland Details: The brightest NLCs I've ever seen, and the first ones for this season. Photo details: Canon 350D, Sigma 17-70 at 17 mm, f/2.8, ISO 100, 1 - 10 second exposures. Panorama created from 24 separate images. ©2013, SpaceWeather.com -- This site is penned daily by Dr. Tony Phillips.