title: Adding tick labels to healpy mollview
body: <p>I am trying to plot a HEALPix mask using healpy, e.g.:</p>
  
  <pre><code>    import healpy as hp
      import matplotlib
      from pylab import *
  
      # Read in mask...
      # ...
  
      # Plot mask
      fig = figure(figsize=(12,8))
      ax = hp.projaxes.HpxMollweideAxes(fig,[0.1,0.1,0.8,0.8],rot=(180.0,0.0,0.0),coord=["C"])
      fig.add_axes(ax)
      ax.projmap(mask,nest=False)
      hp.visufunc.graticule()
      show()
  </code></pre>
  
  <p>However, I would like to display the RA/Dec (phi/theta) tick labels to the axes. Does anybody know how to do this? </p>
  
  <p>Oh, also, does anybody have python code to plot a HEALPix mask on a hammer projection plot?</p>
  
  <p>Thanks!</p>
  
  <p>Alex</p>