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| author | Mattias Andrée <maandree@operamail.com> | 2014-02-24 19:11:29 +0100 |
|---|---|---|
| committer | Mattias Andrée <maandree@operamail.com> | 2014-02-24 19:11:33 +0100 |
| commit | ccf530eeb04592379f86fea25d42921e4bcbe1ee (patch) | |
| tree | 40d06385f9a8d042383259532cde219c9b6c5386 /src | |
| parent | stylo (diff) | |
| download | blueshift-ccf530eeb04592379f86fea25d42921e4bcbe1ee.tar.gz blueshift-ccf530eeb04592379f86fea25d42921e4bcbe1ee.tar.bz2 blueshift-ccf530eeb04592379f86fea25d42921e4bcbe1ee.tar.xz | |
and twilight solar elevation constants
Signed-off-by: Mattias Andrée <maandree@operamail.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/solar.py | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/src/solar.py b/src/solar.py index 6790c3e..8c79d79 100644 --- a/src/solar.py +++ b/src/solar.py @@ -18,6 +18,49 @@ import math import time + +SOLAR_ELEVATION_SUNSET_SUNRISE = 0.0 +''' +:float The Sun's elevation at sunset and sunrise, measured in degrees +''' + +SOLAR_ELEVATION_CIVIL_DUSK_DAWN = -6.0 +''' +:float The Sun's elevation at civil dusk and civil dawn, measured in degrees +''' + +SOLAR_ELEVATION_NAUTICAL_DUSK_DAWN = -12.0 +''' +:float The Sun's elevation at nautical dusk and nautical dawn, measured in degrees +''' + +SOLAR_ELEVATION_ASTRONOMICAL_DUSK_DAWN = -18.0 +''' +:float The Sun's elevation at astronomical dusk and astronomical dawn, measured in degrees +''' + +SOLAR_ELEVATION_RANGE_TWILIGHT = (-18.0, 0.0) +''' +:(float, float) The Sun's lowest and highest elevation during all periods of twilight, measured in degrees +''' + +SOLAR_ELEVATION_RANGE_CIVIL_TWILIGHT = (-6.0, 0.0) +''' +:(float, float) The Sun's lowest and highest elevation during civil twilight, measured in degrees +''' + +SOLAR_ELEVATION_RANGE_NAUTICAL_TWILIGHT = (-12.0, -6.0) +''' +:(float, float) The Sun's lowest and highest elevation during nautical twilight, measured in degrees +''' + +SOLAR_ELEVATION_RANGE_ASTRONOMICAL_TWILIGHT = (-18.0, -12.0) +''' +:(float, float) The Sun's lowest and highest elevation during astronomical twilight, measured in degrees +''' + + + def sun(latitude, longitude, t = None, low = -6.0, high = 3.0): ''' Get the visibility of the Sun |