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airmass noao.astutil


NAME · USAGE · PARAMETERS · EXAMPLE

NAME

airmass -- compute the airmass at a given elevation above horizon

USAGE

airmass elevation

PARAMETERS

elevation
Elevation above horizon in either degrees or radians.
scale = 750.0
Scale factor of the Earth's atmosphere.
radians = no
Input elevation in radians instead of degrees.
airmass
On output, contains the computed airmass.

EXAMPLE

Compute the airmass at an elevation of 30 degrees above the horizon

	cl> airmass 30
	airmass 1.996 at an elevation of 30. degrees (0.5236 radians)
	above horizon

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