         @wfits.setupControls()
         
         # Set color composite as default
-        @setBand('gri')
+        @trigger 'swviewer:loaded'
       )
     
     # Request FITS images

  
  constructor: (selector) ->
    super selector
    
    @stretch = 'linear'
    
    # Run when the WebFITS API is received
    @on 'swviewer:ready', =>
      # NOTE: Dimensions and global extent are hard coded
      el = document.querySelector(@selector)
      @wfits = new astro.WebFITS(el, @dimension)
      unless @wfits.ctx?

          dataunit = hdu.data
          
          # Get image data
          dataunit.getFrameAsync(0, (arr) =>
            # Compute extent
            [min, max] = dataunit.getExtent(arr)

