NGC 2264 and the Christmas Tree Cluster (IMAGE) ESO Caption This color image of the region known as NGC 2264 -- an area of sky that includes the sparkling blue baubles of the Christmas Tree star cluster -- was created from data taken through four different filters (B, V, R and H-alpha) with the Wide Field Imager at ESO's La Silla Observatory, 2400 m high in the Atacama Desert of Chile in the foothills of the Andes. The image shows a region of space about 30 lightyears across. Credit ESO Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.