A Stonyhurst disk is a transparent circular grid with lines of longitude and latitude that can overlay a solar image to reference the positions of sunspots. This overlay system was originally created at the Stonyhurst College observatory.[1][2]

References

  1. ↑ Stonyhurst Disk Animation Archived 2010-03-10 at the Wayback Machine, Data and Activities for Solar Learning, eo.nso.edu,
  2. ↑ "Daily Sunspot Drawings at the 150-Foot Solar Tower", The 150-Foot Solar Tower at Mt. Wilson Observatory, UCLA
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.