Luis Martinez will be speaking at this Friday's meeting of the Saguaro Astronomy Club. The meeting begins at 7:30 p.m. at Grand Canyon University. Directions may be found here: http://saguaroastro.org/content/Meetings.htm Luis will speak about his efforts in astrometry and photometry from his back yard near Casa Grande. Thanks to the advances made in amateur grade telescopes, software, and CCD cameras, backyard astronomers can contribute valid astronomical research, and are doing real science shoulder to shoulder with their professional counterparts. This presentation will serve as an introduction to astrometry and photometry, based on his experience. Hope to see you at the meeting. Tom -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.