diff options
| author | Joseph Hunkeler <jhunkeler@gmail.com> | 2015-07-08 20:46:52 -0400 |
|---|---|---|
| committer | Joseph Hunkeler <jhunkeler@gmail.com> | 2015-07-08 20:46:52 -0400 |
| commit | fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4 (patch) | |
| tree | bdda434976bc09c864f2e4fa6f16ba1952b1e555 /noao/astutil/doc/airmass.hlp | |
| download | iraf-linux-fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4.tar.gz | |
Initial commit
Diffstat (limited to 'noao/astutil/doc/airmass.hlp')
| -rw-r--r-- | noao/astutil/doc/airmass.hlp | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/noao/astutil/doc/airmass.hlp b/noao/astutil/doc/airmass.hlp new file mode 100644 index 00000000..b35c461e --- /dev/null +++ b/noao/astutil/doc/airmass.hlp @@ -0,0 +1,31 @@ +.help airmass Mar84 noao.astutil +.ih +NAME +airmass -- compute the airmass at a given elevation above horizon +.ih +USAGE +airmass elevation +.ih +PARAMETERS +.ls elevation +Elevation above horizon in either degrees or radians. +.le +.ls scale = 750.0 +Scale factor of the Earth's atmosphere. +.le +.ls radians = no +Input elevation in radians instead of degrees. +.le +.ls airmass +On output, contains the computed airmass. +.le +.ih +EXAMPLE +Compute the airmass at an elevation of 30 degrees above the horizon + +.nf + cl> airmass 30 + airmass 1.996 at an elevation of 30. degrees (0.5236 radians) + above horizon +.fi +.endhelp |