Stephen is retired from an aerospace engineering career. At NOAA, and in the private sector, he led the development of payload ground receiving systems for the US weather satellite constellation and NASA remote sensing spacecraft. At NASA/GSFC he led R&D for a Sensor Web Simulator to quantitatively evaluate collaborative space-based observing systems to improve numerical weather prediction. In support of future robotic & human lunar surface exploration, he led the development of a geospatial information system using LRO spacecraft payload data.

Stephen has enjoyed nature and landscape photography for more than 40 years. He has served as the Director, Assistant Director & Education Coordinator of the Central Maryland Photographer's Guild. He has led birds-in-flight photography workshops and, as an instructor at Longwood Gardens, led workshops on how to creatively compose & photograph foliage patterns, forms and textures. His presentations have covered: landscape, wildlife & flower photography; quantitative analyses of camera buffering & memory card performance; and the impact of ISO noise & Shannon entropy on lossless data compression and camera RAW file sizes.

Diana, my wife and photography partner, initially honed her post processing skills using Photoshop CS3 to restore vintage 35 mm prints. We use Adobe's Lightroom Classic and Photoshop and products from Topaz Labs to catalog and post process our photographs.

Stephen's photographs have been published by: Outdoor Photographer magazine: The American Landscape (2015) and OP's 8th Nature's Colors Photography Contest (2015); the Maryland Department of Natural Resources and the Howard County Conservancy.