This extraordinary video clip was recorded at ESA's Optical Ground Station (OGS) at about 19:05 UTC on 8 October 2014 as the station illuminated the ISS with a 3.6-Watt 532-nm green laser, used for testing next-gen optical communication technologies. The video clearly shows the ISS bathed in green light as it is tracked by the OGS through the 4-minute pass at an altitude of about 420 km.<br /><br />The video is a time lapse done at 7 shots per second with a reflex digital camera attached to the OGS secondary telescope. <br /><br />The OGS is located at the Teide Observatory, Tenerife, Spain, which is operated by the Instituto de Astrofísica de Canarias.<br /><br />The demonstration was conducted as part of ESA's #SpaceOptics SocialSpace event, 7-8 October. <br /><br />More photos via http://bit.ly/spaceoptics2014<br /><br />Credit: IAC/Instituto de Astrofísica de Canarias/Daniel López
