Fixed bugs with upsilons

According to [this](http://wiki.scipy.org/Tentative_NumPy_Tutorial#head-7b05d56840e7aa87c748c1d2296cf6b7288514e3) and [this](https://groups.google.com/forum/#!topic/astro501/rtqAvsKpshA), np.copy does a deep copy so your answer is yes.