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-rw-r--r--docs/source/operations/projections/healpix.rst9
1 files changed, 9 insertions, 0 deletions
diff --git a/docs/source/operations/projections/healpix.rst b/docs/source/operations/projections/healpix.rst
index e13c5456..d28afa8d 100644
--- a/docs/source/operations/projections/healpix.rst
+++ b/docs/source/operations/projections/healpix.rst
@@ -51,6 +51,15 @@ Parameters
.. note:: All parameters for the projection are optional.
+.. option:: +rot_xy
+
+ .. versionadded:: 7.0.0
+
+ Rotation of the HEALPix map in degrees. A positive value results in a clockwise
+ rotation around (x_0, y_0) in the cartesian / projected coordinate space.
+
+ *Defaults to 0.0.*
+
.. include:: ../options/lon_0.rst
.. include:: ../options/x_0.rst