Hourly Airmass
See also: Object Observability - Airmasses - Daily Almanac - Sky Calendar
This tool provides hourly airmasses, parallactic angle and heliocentric-barycentric corrections based onsite, date, and object coordinates information. Times are given forthe local time, including daylight saving times when applicable.
Select site, object coordinates and date; then press Compute. The time step can also be chosen (defaults to 1 hour).
More detailed information is provided is a separate document
SkyCalc provided by courtesy of John Thorstensen, Dartmouth College.John.Thorstensen@dartmouth.edu