The 150-Foot Solar Tower at Mt. Wilson Observatory
. . . observing the Sun every clear day since 1912.

This page last updated on Fri Sep 21 10:09:37 PDT 2018

Most current magnetograph data: 22-Jan-2013
Magnetogram Dopplergram Intensitygram*
Click for larger image of Fe magnetogram Click for larger image of Fe dopplergram Click for larger image of Fe intensitygram 5250.2Å
Fe I
Click for larger image of Na magnetogram Click for larger image of Na dopplergram Click for larger image of Na intensitygram 5895.9Å
Na I (D1)
Mt. Wilson 150-Foot Tower Data Images
*5250 intensity: 5250/5237 ratiogram
[Click to view a larger image of Solar Tower]

The 150-foot solar tower is operated by the
Division of Astronomy and Astrophysics at UCLA
with support from
The Mount Wilson Institute

Most current visual sunspot observation: 21-Sep-2018
Click for larger image of sunspot drawing
E---Mt. Wilson Sunspot Drawing---W

MPSI data from the most recently reduced observation(s):
For 5 observations taken on 01-22-13:
Average MPSI = 1.1770; Average MWSI = 0.1048
Solar Activity Plots, MPSI - MWSI
Click for larger MPSI plot and    other data plots

Supersynoptic chart showing solar magnetic fields 1974-2012
Magnetic field plot.
(Click on image for an explanation and more plots.)

150-Foot Solar Tower Towercam
(Click on Camera)
Click for current Towercam Image!
Northeast view toward the 100-Inch Telescope Dome.

NOAA Southern California visible satellite image:
(Click on Image)
[Click for most current visible satellite image from NOAA]

Available Archived Data:

[*] Magnetograph Image Archive - FTP
[*] Magnetograph FITS Archive - FTP
Daily Average Magnetic FITS Archive - all or Slow only
[*] Solar Synoptic Maps - FTP
[*] Daily Sunspot Drawing Archive - FTP
[*] Atlas of Solar Magnetic Fields, Howard, Bumba and Smith, 1967
[*] Solar Photographic Archive Digitization Project
[*] Photoheliogram (Directs) Logbook Archive, 1908-2000
[*] Spectroheliograph Logbook Archive, 1915-1985
[*] Spectroheliograph Data Archive, 1915-1985. Synoptic Charts.
[*] 1967 Quality Assessment Images -- QA Read Me
[*] Solar Magnetic Movies
[*] Sunspot Plots
[*] Monthly Sunspot Reports
[*] Updated Archive Data with Plots
[*] Recent publications by the Solar Group
[*] Data Release Statement

150-Foot Solar Tower Information:

[*] Telescope Information
[*] Tower Painting 2012, American Recovery And Reinvestment Act funded, Photos by Steve Padilla
[*] Magnetograph Information
[*] A Short History of the 150-Foot Solar Tower
[*] 150-Foot Solar Tower Photo Scrapbook
[*] Staff and Personnel
[*] Maps to Mt. Wilson Observatory

Related Sites:
[*] Solar Physics at UCLA
[*] UCLA Division of Astronomy & Astrophysics
[*] Mount Wilson Observatory Homepage - Mount Wilson Institute
[*] Mount Wilson Observatory 60-Foot Solar Tower - USC
[*] Historical Sunspot Drawing Resource Page
[*] Collection of Solar Links

Questions, comments, or suggestions?
or mail: 150-Foot Solar Tower
Mt. Wilson Observatory
Mt. Wilson, CA 91023

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