これは日々の作業を通して学んだことや毎日の生活で気づいたことをを記録しておく備忘録である。
HTML ファイル生成日時: 2024/12/21 11:44:57.596 (台灣標準時)
astroplan を使って、月の出と月の入りの時間を調べるには以下のようにすれ ばよいようでござる。
#!/usr/pkg/bin/python3.9 # # Time-stamp: <2022/07/03 11:53:37 (CST) daisuke> # # importing argparse module import argparse # importing astropy module import astropy.units import astropy.time import astropy.coordinates # importing astroplan module import astroplan # units unit_m = astropy.units.m # constructing parser object desc = "finding moonrise/moonset time" parser = argparse.ArgumentParser (description=desc) # adding arguments parser.add_argument ('-l', '--longitude', default='+121d11m12s', \ help='longitude of observing site in format "+121d11m12s"') parser.add_argument ('-b', '--latitude', default='+24d58m12s', \ help='latitude of observing site in format "+24d58m12s"') parser.add_argument ('-a', '--altitude', type=float, default=151.6, \ help='altitude above sea-level in metre') parser.add_argument ('-t', '--datetime', default='2000-01-01T12:00:00.000', \ help='date/time in UT in "YYYY-MM-DDThh:mm:ss.sss" format') # command-line argument analysis args = parser.parse_args () # input parameters site_lon = args.longitude site_lat = args.latitude site_alt = args.altitude * unit_m datetime_str = args.datetime # printing input parameters print ("#") print ("# input parameters") print ("#") print ("# Location:") print ("# longitude =", site_lon) print ("# latitude =", site_lat) print ("# altitude =", site_alt) print ("# Date/Time:") print ("# date/time (UT) =", datetime_str) print ("#") # location object location = astropy.coordinates.EarthLocation.from_geodetic \ (site_lon, site_lat, site_alt) # observer object observer = astroplan.Observer (location=location, name="observer", \ timezone="UTC") # time object datetime = astropy.time.Time (datetime_str, scale='utc') # using DE430 astropy.coordinates.solar_system_ephemeris.set ('de430') # moonrise moonrise = observer.moon_rise_time (datetime, which="nearest") # moonset moonset = observer.moon_set_time (datetime, which="nearest") # printing results print ("moonrise time nearest to %s" % datetime) print (" JD = %s" % moonrise) print (" = %s" % moonrise.isot) print ("moonset time nearest to %s" % datetime) print (" JD = %s" % moonset) print (" = %s" % moonset.isot)
実行してみると、以下のようになるでござる。
% ./astroplan_sample_10.py -h usage: astroplan_sample_10.py [-h] [-l LONGITUDE] [-b LATITUDE] [-a ALTITUDE] [-t DATETIME] finding moonrise/moonset time optional arguments: -h, --help show this help message and exit -l LONGITUDE, --longitude LONGITUDE longitude of observing site in format "+121d11m12s" -b LATITUDE, --latitude LATITUDE latitude of observing site in format "+24d58m12s" -a ALTITUDE, --altitude ALTITUDE altitude above sea-level in metre -t DATETIME, --datetime DATETIME date/time in UT in "YYYY-MM-DDThh:mm:ss.sss" format % ./astroplan_sample_10.py -t 2022-07-03T16:00:00 # # input parameters # # Location: # longitude = +121d11m12s # latitude = +24d58m12s # altitude = 151.6 m # Date/Time: # date/time (UT) = 2022-07-03T16:00:00 # moonrise time nearest to 2022-07-03T16:00:00.000 JD = 2459764.5597612327 = 2022-07-04T01:26:03.371 moonset time nearest to 2022-07-03T16:00:00.000 JD = 2459764.078985439 = 2022-07-03T13:53:44.342