James Chen is retired from the Department of the Navy and Federal Aviation Administration where he worked as a Radar and Surveillance Systems Engineer. A guest lecturer at local Washington DC/Northern Virginia/Maryland astronomy clubs on amateur astronomy topics of eyepiece design and optical filters, he wrote a short Astronomy Magazine article on Dobsonian telescope design November 1989 and served as a sales consultant to two Washington DC area telescope stores for over 30 years.

James is a frequent speaker at Astronomy clubs near his home in Virginia and has also spoken at Princeton on the topic of Astronomy for Older Eyes.

James has authored five books for Springer Publishing’s The Patrick Moore Practical Astronomy Series including the titles:

• How to Find the Apollo Landing Sites
• A Guide to Hubble Space Telescope Objects: Their Selection, Location, and Significance
• The Vixen Star Book User Guide: How to Use the Star Book TEN and the Original Star Book
• The NexStar Evolution and SkyPortal User’s Guide
• Astronomy for Older Eyes: A Guide for Aging Backyard Astronomers