With significant input from Tony Tyson and help from many others, we have prepared a web-based exposure time calculator for LSST. We hope it will be useful for calculating the single-exposure and survey depths of the LSST Point Design, as well as for exploring the impact of changing that design on the science case. To access the ETC, go to http://www.ctio.noao.edu/lsst/etc/. We would appreciate any and all feedback. Knut Olsen and Chris Smith LSST LSST LSST LSST LSST Mailing List Server LSST LSST LSST LSST LSST LSST LSST LSST This is message 168 in the lsst-general archive, URL LSST http://www.astro.princeton.edu/~dss/LSST/lsst-general/msg.168.html LSST http://www.astro.princeton.edu/cgi-bin/LSSTmailinglists.pl/show_subscription?list=lsst-general LSST The index is at http://www.astro.princeton.edu/~dss/LSST/lsst-general/INDEX.html LSST To join/leave the list, send mail to lsst-request@astro.princeton.edu LSST To post a message, mail it to lsst-general@astro.princeton.edu LSST LSST LSST LSST LSST LSST LSST LSST LSST LSST LSST LSST LSST LSST LSST LSST LSST