Our next meeting is on Wednesday, October 11, the 2nd rather than 3rd week of the month. This is a one-time change. Come hear about Bart Billard’s new amateur-friendly interferometer and what it can do. Interferometers are powerful instruments in determining chemical composition of stars and assisting in detecting stellar motion. The meeting will be from 7-9 PM in Room 2 of the Fredericksburg branch of the Central Rappahannock LIbrary at 1201 Caroline Street in downtown Fredericksburg. Hope you can attend!