1 / 19

First spot of cycle 19

First spot of cycle 19. Place: Mt Wilson 60-ft. Date: 13 August 1953. Log. People. Seth Nicholson Solar program head Joe Hickox Solar Observer Harold Babcock MagnetographObservations Hale Lab Clifford Bennett McMath-Hulbert Observer and Discoverer of first spot of cycle 19.

yvon
Download Presentation

First spot of cycle 19

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. First spot of cycle 19

  2. Place: Mt Wilson 60-ft

  3. Date: 13 August 1953

  4. Log

  5. People • Seth Nicholson Solar program head • Joe Hickox Solar Observer • Harold Babcock MagnetographObservations Hale Lab • Clifford Bennett McMath-Hulbert Observer and Discoverer of first spot of cycle 19

  6. Seth Nicholson

  7. Joe Hickox

  8. Harold Babcock

  9. 60-ft observing routine • Spot drawing: group number, lat & long, field strength & polarity • White light photo • Ca K spectroheliogram

  10. Spot drawing 13 Aug 1953

  11. Time history

  12. Harold Babcock

  13. Seth Nicholson

  14. Other high latitude spots?

  15. Karen Harvey butterfly fig

  16. C21-24 spots (J. Harvey)

  17. Summary • Our predecessors were keen and alert observers • For reasons unknown there have been more high latitude spots in recent years • (In ignorance) I observed the first spot of cycle 19 thanks to Nicholson

More Related