Stephen is retired from an aerospace engineering career. While employed at NOAA and the private sector he led the development of ground systems that receive real-time science data from the US weather satellites and NASA earth remote sensing spacecraft. At NASA/GSFC he led R&D for a Sensor Web Simulator to evaluate the viability of networked, collaborative space-based observing systems to improve numerical weather prediction. In support of future robotic and human exploration of the lunar surface, he led the development of a geospatial information system using LRO spacecraft imagery and laser altimetry data.

Stephen has enjoyed nature and landscape photography for more than 40 years. He has served as the Director, Assistant Director and Education Coordinator of the Central Maryland Photographer's Guild. He has led birds-in-flight photography workshops and, as an instructor at Longwood Gardens, guided students how to capture foliage patterns, forms and textures. His presentations to photography clubs have covered diverse topics: creative flower photography; digital camera buffering and memory card performance; and the impact of ISO noise and 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.