UW-Eau Claire's "Ask a Scientist" series will feature the Chippewa Valley Astronomical Society's own Ed Henry and his presentation titled "Astrophotography" Feb 19. The event will begin at 7 p.m. at the Acoustic Café in downtown Eau Claire. Henry will discuss the fascinating art of astrophotography and showcase some of his own stunning images of our universe. He will reveal some astrophotographic techniques as well as tips on astrophotography for beginners with nonprofessional equipment. The series will continue at 7 p.m. March 19 with a presentation titled "Knot Theory" by Dr. Carolyn Otto of the UW-Eau Claire mathematics department. For more information about "Ask a Scientist," contact Dr. Paul Thomas, professor of physics and astronomy, at email@example.com.