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Remove Keyword synonyms and add CCDData.copy #6

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Remove Keyword synonyms and add CCDData.copy #6

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8 changes: 5 additions & 3 deletions ccdproc_api.py
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Original file line number Diff line number Diff line change
Expand Up @@ -157,6 +157,9 @@
# and metadata
hdu = ccddata.to_hdu()

# CCDData has a copy method for convenience:
ccddata_copy = ccddata.copy()

'''
Keyword is an object that represents a key, value pair for use in passing
data between functions in ``ccdproc``. The value is an astropy.units.Quantity,
Expand Down Expand Up @@ -257,12 +260,11 @@
# in the second case the exposure time will be extracted from the
# metadata for each image.
masterdark = ccdproc.CCDData(np.zeros(100, 100))
masterdark.meta['exptime'] = 30.0
masterdark.meta['exposure'] = 30.0
ccddata.meta['EXPOSURE'] = 15.0

exposure_time_key = ccdproc.Keyword('exposure',
unit=u.sec,
synonyms=['exptime'])
unit=u.sec)

# explicitly specify exposure times
ccddata = ccdproc.subtract_dark(ccddata, masterdark,
Expand Down