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HTML ファイル生成日時: 2024/12/05 07:26:42.662 (台灣標準時)
astroplan を使って、ファインディングチャートを作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 12:41:30 (CST) daisuke> # # importing argparse module import argparse # importing pathlib module import pathlib # importing sys module import sys # importing astropy module import astropy.units # importing astroplan module import astroplan import astroplan.plots # importing matplotlib module import matplotlib.pyplot # importing ssl module import ssl # allow insecure downloading ssl._create_default_https_context = ssl._create_unverified_context # units unit_arcmin = astropy.units.arcmin # constructing parser object desc = "making a finding chart" parser = argparse.ArgumentParser (description=desc) # adding arguments parser.add_argument ('-t', '--target', default='M1', help='target name') parser.add_argument ('-f', '--fov', type=float, default=15.0, \ help='field-of-view in arcmin (default: 15 arcmin)') parser.add_argument ('-o', '--output', default='chart.png', \ help='output file name (EPS, PDF, PNG, or PS file)') # command-line argument analysis args = parser.parse_args () # input parameters target = args.target fov = args.fov * unit_arcmin file_output = args.output # making pathlib object path_output = pathlib.Path (file_output) if (path_output.exists ()): # printing message print ("ERROR: output file '%s' exists." % file_output) # exit sys.exit () if not ( (path_output.suffix == '.eps') or (path_output.suffix == '.pdf') \ or (path_output.suffix == '.png') or (path_output.suffix == '.ps') ): # printing message print ("ERROR: output file must be either EPS, PDF, PNG, or PS.") # exit sys.exit () # target obj = astroplan.FixedTarget.from_name (target) # image ax, hdu = astroplan.plots.plot_finder_image (obj, fov_radius=fov) # saving the image to file matplotlib.pyplot.savefig (file_output, dpi=225)
実行してみると、以下のようになるでござる。
% ./astroplan_sample_16.py -h usage: astroplan_sample_16.py [-h] [-t TARGET] [-f FOV] [-o OUTPUT] making a finding chart optional arguments: -h, --help show this help message and exit -t TARGET, --target TARGET target name -f FOV, --fov FOV field-of-view in arcmin (default: 15 arcmin) -o OUTPUT, --output OUTPUT output file name (EPS, PDF, PNG, or PS file) % ./astroplan_sample_16.py -t M1 -o m1.png Downloading https://skyview.gsfc.nasa.gov/tempspace/fits/skv11085880335151.fits |==========================================| 374k/374k (100.00%) 1s QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-daisuke' % ls -lF *.png -rw-r--r-- 1 daisuke taiwan 174496 Jul 3 12:27 airmass_20220703.png -rw-r--r-- 1 daisuke taiwan 127678 Jul 3 12:39 m1.png -rw-r--r-- 1 daisuke taiwan 175140 Jul 3 12:33 sky_20220703.png % feh -dF m1.png
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