Here's a few lighting examples to make your images brighter and clearer:
First, a single light source, like a general-purpose LED or small incandescent lamp will provide enough light to view the flux clearly. But, such a dim light source requires a darkened room to view in.
Most of the images I've posted here and on the website were made using a black paper background, ultra-bright LED's and a high quality digital camera. The brightest and clearest images were made inside a dark chamber (cardboard box). It's difficult to perform experiments inside a box, so your next best environment is night-time with no lights on in your room.
Your view of the field will change depending on where your light source is. A ringed image will appear using rear lighting, whereas side lighting will result in an ellipse. Multiple light sources will allow multiple rings or ellipses, and their position in space is dependent on the orientation and strength of the applied magnetic field.
Using a laser creates a different pattern. When the beam passes through the cell, near a magnetic pole the beam will diverge into a 180 degree ring. This ring can be manipulated to spin about its' axis by either rotating the magnet (N-S) or rotating the laser around the magnet (see: Youtube video)
Yes each light creates one ellipse (or circle). Think of them as a unique point in space around the object (magnet). If you had 1000 lights you would see a 3-d sphere made of 1000 ellipses'. Think of the quantity as 'resolution'- like pixels. There is no discussion about this anywhere else on the forum, but you can read more detail on the reference section of the website: www.ferrocell.us/references/PHOTONIC%20MAPPING%20OF%20MAGNETIC%20FIELDS.pdf