   dimension: 440
   bands:  ['u', 'g', 'r', 'i', 'z']
   source: 'http://spacewarps.org.s3.amazonaws.com/subjects/raw/'
-  
-  # Default parameters
-  defaultAlpha: 0.09
-  defaultQ: 1.0
-  defaultScales: [0.4, 0.6, 1.7]
   
   
   events:

    @opts.gMin = gMin
    @opts.gMax = gMax
    
    @dfs = undefined
    
    @wfits.setCalibrations(1, 1, 1)
    
    # Get settings or fallback to defaults
    scales  = @opts.scales or @defaultScales
    alpha   = @opts.alpha or @defaultAlpha
    Q       = @opts.q or @defaultQ
    min     = @opts.extent?.min or gMin
    max     = @opts.extent?.max or gMax
    
    @wfits.setScales.apply(@wfits, scales)
    @wfits.setAlpha(alpha)
    @wfits.setQ(Q)
    @wfits.setExtent(min, max)
    
    # Enable mouse controls

    @wfits = new astro.WebFITS(@el, @dimension)
    unless @wfits.ctx?
      alert 'Something went wrong initializing the context'
      return
    
    # Load offsets if they exists
    @wfits.xOffset = @opts.xOffset or @wfits.xOffset
