Developed in Canada at York University by Marshall L. McCall with the help of: Ennio Cellucci Shaun Delaney Robin Fingerhut Chris Klinowski Azadeh Mahinpou Ovidiu Vaduvescu If you make use of this facility, please credit McCall, M. L. 2004, A.J., 128, 2144.
THE ANSWER TO YOUR EXTINCTION NEEDS

Due to technical difficulties the York Extinction Solver is unavailable. We do not yet have an estimate of when the service will be restored. Please contact us for further information.

YES is compatible with Firefox, Netscape 8, and Internet Explorer 6. Any questions should be directed to Marshall McCall (mccall@yorku.ca).  Please be polite. Hosted at the Canadian Astronomy Data Centre, National Research Council Canada.