Hostname: page-component-848d4c4894-mwx4w Total loading time: 0 Render date: 2024-06-27T07:20:50.802Z Has data issue: false hasContentIssue false
  • English
  • Français

The Kitt Peak Magnetograph. IV: 40-Channel Probe and the Detection of Weak Photospheric Fields

Published online by Cambridge University Press:  14 August 2015

W. Livingston  and
J. Harvey
W. Livingston
Affiliation:
Kitt Peak National Observatory*, Tucson, Arizona, U.S.A.
J. Harvey
Affiliation:
Kitt Peak National Observatory*, Tucson, Arizona, U.S.A.

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The 40-channel magnetograph is described. Special attention is given to details of the fiber-optic probe which dissects the Fraunhofer line image and provides for a choice of spectral and spatial resolution. Examples of magnetograms taken with the instrument are shown. Maps of quiet areas, made with long integration times to achieve a noise of 0.4 G, yet with 5 arc-sec resolution, indicate the presence everywhere of a minimum background field of average strength 2–3 G.

Type
Part I: Instrumentation – Measurement Fields in the Solar Atmosphere
Information
Symposium - International Astronomical Union , Volume 43: Solar Magnetic Fields , 1971 , pp. 51 - 61
Copyright
Copyright © Reidel 1971 

References

Beckers, J. M.: 1968, Solar Phys. 5, 15.Google Scholar
Chapman, G. A. and Sheeley, N. R. Jr.: 1968, Solar Phys. 5, 442.Google Scholar
Harvey, J. and Livingston, W.: 1969, Solar Phys. 10, 283.Google Scholar
Livingston, W. and Harvey, J.: 1971, (paper I) submitted to Solar Phys. Google Scholar
Harvey, J. and Livingston, W.: 1971, (paper II) submitted to Solar Phys. Google Scholar
Livingston, W., Harvey, J., and Slaughter, C.: 1970, (paper III) IAU Colloquium No. 11, Automation in Optical Astrophysics , Edinburgh, 12–14 August, 1970.Google Scholar
Van Speybroeck, L., Krieger, A., and Vaiana, G.: 1970, Nature 227, 818.Google Scholar