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Fix statement about orientation of HMI images #7211

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Sep 19, 2023
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Fix statement about orientation of HMI images #7211

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2 changes: 1 addition & 1 deletion examples/map_transformations/upside_down_hmi.py
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Expand Up @@ -28,7 +28,7 @@
# Now rotate the image such that solar North is pointed up.
# We have to do this because the HMI instrument is mounted upside-down
# relative to the AIA instrument on the SDO satellite, which means most
# of the images are taken with solar North pointed up.
# of the images are taken with solar North pointed down.
# The roll angle of the instrument is reported in the FITS header
# keyword ``CROTA2`` (see Figure 17 of
# `Couvidat et al. (2016) <https://dx.doi.org/10.1007/s11207-016-0957-3>`_,
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