Photons Remembered Jan Kratochvil Photography (This page was formerly known as: http://www.iscap.columbia.edu/jank/Photo/ ) . . . This new photography website is in works... So far I have only posted some new images from South Africa and migrated the Sports section here, with many updates in particular on Ultimate Frisbee. Some Aviation and Space Flight images have also been posted. For all other (older) images please visit my Original Photography Website which is being slowly decommissioned. If you wish to contact me, you can do so here. What's new? Glider Encampment in Springfield, VT, 2017. Last updated: July 10, 2018.