Hello, I have just completed two web based programs that I believe will be of some use to the APO/SPIcam community, especially to those just starting to use the 3.5m (graduate students, postdocs, new faculty). They can be accessed at http://cygnus.uchicago.edu/~geza/APOcalc.html http://cygnus.uchicago.edu/~geza/StandLoc.html The first is an exposure calculator for the 3.5m/SPIcam combination. The interface is based on the KPNO exposure calculators but allows one to specify either the Sloan ugriz or the UBVRI filter set. Since SPIcam is usually binned, the binning is adjustable. I have checked the calculator against a recently observed standard star and it appears to be optimistic by about 20% depending on band. Alternatively the night was not photmetric! The second is a standard star locator. Given the local APO time (either civil or sidereal) and the location of the primary target, it will suggest standard stars ranked by difference in airmass and distance from target. Both ugriz and UBVRI filter sets are supported with 158 and 267 standards repectively. Please send me feedback about these calculators! The more feedback that better I can know if they are useful or what to change. I particularly would appreciate feedback on whether the exposure calculator is getting figures in the ballpark or not. Also, if you have a favorite set of standards, for example perhaps for spectrometry or narrowband work please contact me about getting it included as an option. Thanks, Geza Gyuk Research Scientist University of Chicago and Research Astronomer Adler Planetarium & Astronomy Museum APO APO APO APO APO Apache Point Observatory 3.5m APO APO APO APO APO This is message 594 in the apo35-general archive. You can find APO the archive on http://www.astro.princeton.edu/APO/apo35-general/INDEX.html APO To join/leave the list, send mail to apo35-request@astro.princeton.edu APO To post a message, mail it to apo35-general@astro.princeton.edu APO APO APO APO APO APO APO APO APO APO APO APO APO APO APO APO APO