Sat. 27 Feb 2010
Post date: Feb 28, 2010 3:40:52 PM
Ed and I went out to Broemmelsiek in case any of my, or Stacey Thater's, students showed up for observing. Jim and Yvonne arrived, and Jim showed us how to use the Jones-Bird 16" and its digital setting circle accessory. WOW, large aperture with crisp images, can't be beat.
Check out this link that discusses interesting optical paths http://members.chello.at/birkfellner/raytracing.html