A young scientist Alexandra Gojdicova produced these short videos during the ISWI summer school in Europe (August 21-27, 2011, Astronomical Institute of the SAS, Tatranska Lomnica, Slovakia). If the ISWI community has comments on these videos, they can be sent her at esfiresfir[at]gmail.com.
Thanks are due to Dr. Ivan Dorotovic, whose thoughtfulness created this permanent record.