co_refract_forward: Calculate the true altitude of a celestial object from an...
In astrolibR: Astronomy Users Library
Description
Usage
Arguments
Details
Value
Note
Author(s)
See Also
Examples
Description
Calculate the true altitude of a celestial object from an observed altitude.
This function is called by co_refract, the function to correct altitude due to atmospheric refraction.
Usage
1
co_refract_forward(a, p = 1010, t = 283)
Arguments
a
The observed (‘apparent’) altitude, in degrees
p
Atmospheric pressure, in millibars (default=1010)
t
Ground temperature, in degrees Celsius (default=0)
Details
See description for co_refract.
Value
R
Correction to apparent altitude, subtracted from a, in degrees
Note
The IDL documentation may be incorrect: the input variable t appears to be in degrees Kelvin. The value t=0 is converted to 283, but other values should be in Kelvin.
Author(s)
Chris O'Dell 2002
Arnab Chakraborty R version 2013
See Also
Examples
1
co_refract_forward (30)
Example output
[1] 0.02862189
astrolibR documentation built on May 2, 2019, 3:26 a.m.
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Description Usage Arguments Details Value Note Author(s) See Also Examples
Description
Calculate the true altitude of a celestial object from an observed altitude. This function is called by co_refract, the function to correct altitude due to atmospheric refraction.
Usage
1 | co_refract_forward(a, p = 1010, t = 283)
|
Arguments
a |
The observed (‘apparent’) altitude, in degrees |
p |
Atmospheric pressure, in millibars (default=1010) |
t |
Ground temperature, in degrees Celsius (default=0) |
Details
See description for co_refract.
Value
R |
Correction to apparent altitude, subtracted from a, in degrees |
Note
The IDL documentation may be incorrect: the input variable t appears to be in degrees Kelvin. The value t=0 is converted to 283, but other values should be in Kelvin.
Author(s)
Chris O'Dell 2002
Arnab Chakraborty R version 2013
See Also
Examples
1 | co_refract_forward (30)
|
Example output
[1] 0.02862189
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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