The observatory operates a series of solar telescopes which image the whole Sun and selected areas which are highly magnified. It operates two videomagnetographs which measure Stokes parameters and magnetic fields in real time by digital image processing. These permit highly sensitive measurements of solar magnetic fields and their time dependence. Other programs are focussed on the extremely high resolution observations of the time development of solar phenomena, especially sunspots, flares, and prominences, which may be observed because of its unique location in the lake. BBSO has a wide assortment of monochromatic filters which permit imaging selected parts of the solar atmosphere. The data obtained is studied by a group in Pasadena.

The magnetograph can also be used in a Doppler mode for real-time two-dimensional Doppler imaging, which gives fascinating results on velocities in sunspots and active regions. A 1024x1024 CCD is used for high-resolution continuum observations in the visible, the blue, and near ultraviolet, and, through a special narrow-band birefringent filter, in the infra-red helium line 10830.

Computerized image processing is used to produce very high-resolution solar movies which enable us to track very weak flows, granule evolution, and other important phenomena. We have had considerable success with this method in measuring flows and flares and sunspot changes.