1. High Altitude Observatory; National Center for Atmospheric Research; Boulder Colorado USA
2. Thayer School of Engineering; Dartmouth College; Hanover New Hampshire USA
3. Department of Physics and Astronomy; West Virginia University; Morgantown West Virginia USA
4. Department of Physics and Astronomy; Dartmouth College; Hanover New Hampshire USA
5. Department of Computer and Information Systems; Vermont Technical College; Randolph Vermont USA