Javadoc of ElevationMask
The Javadoc for org.orekit.utils.ElevationMask does not detail the format of the double array required to construct the ElevationMask object.
For the array, Mask[i] should contain Azimuth values and Mask[i] should contain corresponding Elevations, expressed in Radians. It would be useful to include this information in future Javadoc revisions.
Thanks to @evanward1 for the information [https://forum.orekit.org/u/evan.ward], corresponding forum post can be found here: https://forum.orekit.org/t/usage-of-elevationmask/859.