Title: AEOS spectrograph concept update Speakers: Don Mickey, Alan Stockton, Klaus Hodapp and Gerry Luppino Abstract: The conceptual design for the AEOS visible/NIR spectrograph, being built at IfA for installation at the Air Force 3.67 m telescope on Haleakala, is under way. The scope of the instrument is pretty well defined and the optical designs are in progress. While the overall capabilities of the spectrograph are constrained by the observatory environment, the state of technology, and the available funding, some tradeoffs to favor particular capabilities are possible. This meeting will be an informal presentation of the current state of the design, and an opportunity for potential users to throw tomatoes (uh, offer constructive criticism).