---

The Wilcox Solar Observatory

---

WSO Data:		Mean Field		Magnetograms		Synoptic Charts		Coronal Model		Tables		Other

The Wilcox Solar Observatory began daily observations of the Sun's global magnetic field in May 1975, with the goal of understanding changes in the Sun and how those changes affect the Earth; this is now called space weather. Since 1976 low-resolution maps are also made of the Sun's magnetic field each day, as are observations of solar surface motions. The observatory is located in the foothills just west of the Stanford University campus.

Current research topics include space weather, helioseismology, and the solar cycle; The staff are closely associated with the Solar Oscillations Investigation that uses the Michelson Doppler Imager (MDI) instrument on the SOHO spacecraft to observe the inside of the Sun.

Information is available concerning Solar Observatories Group, Astronomy, and Astrophysics at Stanford, the SOI-MDI project, and schedules for Helioseismology, CSSA, and related Bay Area Seminars.

Currently all WSO support come from NASA. WSO has been supported by ONR, NASA, and the NSF. The observatory is directed by Prof. P.H. Scherrer.

	Visit the SOLAR Center -- our award winning educational web site providing on-line activities to encourage and share the wonder of solar science exploration. You can also learn about Space Science at Windows to the Universe or The Exploration of the Earth's Magnetosphere or about some topics in astronomy in general at From Stargazers to Starships. When is Sunrise?	The Sky Above

WSO Solar Magnetic Field Observations

• Form for requesting WSO Synoptic Data.
• Latest Preliminary: Magnetogram, Photospheric Field Map, and Coronal Field Map,
• Summary and Complete descriptions of available WSO data.
• The WSO Data Use Policy.

Magnetograms

	<<---Our latest magnetogram: [ps] or [gif]

2006: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
2005: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
2004: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
2003: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
2002: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
2001: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
2000: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
1999: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
1998: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
1997: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
1996: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
1995: Jun, Jul, Aug, Sep, Oct, Nov, Dec

Synoptic Charts of the Photospheric Magnetic Field

• A preliminary plot of the most recent 360 degrees [ps] of data.

Computed Coronal Field Maps

• Our most recent preliminary classic 360 degrees [ps] line-of-sight computation.
• Our most recent preliminary radial Rs=2.5: 360 degrees [ps] computations.
• Our most recent preliminary radial 3.25 Rs: 360 degree [ps] calculations.

Numerical Data Tables

• Synoptic Charts and
• Harmonic Coefficients and
• Level 3 Magnetograms

• Radial Harmonic Coefficients.
• Latest Harmonic Coefficients to order 20; a daily archive.
• 2.50 Rs Source Surface Field Data
• 3.25 Rs Source Surface Field Data

• Harmonic Coefficients
• 2.50 Rs LOS Source Surface Field Data including the latest preliminary values.

The Mean Magnetic Field of the Sun

1975 | 1976 | 1977 | 1978 | 1979 | 1980 | 1981 | 1982 | 1983 | 1984 | 1985 | 1986 | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 *
• Complete MF Time Series from 1975:05:16 to 2006:04:30
• Recent meanfield plot in Bartels calendar: .ps | .gif .

Other Quantities