This form allows you to make a plot of airmass vs. time for a given astronomical target, by specifying either the coordinates, or an object name to be resolved by Simbad or NED.
This page was created by Eric Jensen. This tool is part of the Tapir package for planning astronomical observations; the source code is freely available. You can also make finding charts, or plan transiting exoplanet observations.
Feedback welcome! Send here.