Abstract

We have built an instrument that counts pulses from photomultipliers that look at four bands of solar continuum, recording the changes in intensity during an eclipse. We use a plywood spectrograph to select an ultraviolet band and interference filters for the others. The number of counts seen in 120sec is displayed for the subsequent 120sec on binary light-emitting diodes which are photographed. Our experiment can attain a spatial resolution of better than 0.1 see of arc and an accuracy in irradiance of better than 3%.

© 1970 Optical Society of America

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References

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  1. U. S. Naval Observatory, Astronomical Papers Vol. 17: The Marginal Zone of the Moon (1963).
  2. S. R. Weart, J. E. Faller, Astrophys. J. 157, 887 (1969).
    [CrossRef]
  3. S. R. Weart, “Photoelectric Eclipse Observations of Continuum and Coronal Line Emission at the Solar Limb,” JILA Report No. 96 (1968).

1969 (1)

S. R. Weart, J. E. Faller, Astrophys. J. 157, 887 (1969).
[CrossRef]

Faller, J. E.

S. R. Weart, J. E. Faller, Astrophys. J. 157, 887 (1969).
[CrossRef]

Weart, S. R.

S. R. Weart, J. E. Faller, Astrophys. J. 157, 887 (1969).
[CrossRef]

S. R. Weart, “Photoelectric Eclipse Observations of Continuum and Coronal Line Emission at the Solar Limb,” JILA Report No. 96 (1968).

Astrophys. J. (1)

S. R. Weart, J. E. Faller, Astrophys. J. 157, 887 (1969).
[CrossRef]

Other (2)

S. R. Weart, “Photoelectric Eclipse Observations of Continuum and Coronal Line Emission at the Solar Limb,” JILA Report No. 96 (1968).

U. S. Naval Observatory, Astronomical Papers Vol. 17: The Marginal Zone of the Moon (1963).

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Figures (1)

Fig. 1
Fig. 1

Side and end views of eclipse spectrometer. AA, central line of incoming light beam, passing through spectrograph collimating mirror; 1, coelostat mirror; 2, Cassegrain-Schmidt telescope; 3, spectrograph; 4, box containing photomultiplier that receives light from mirror behind spectrograph exit slit; 5, boxes containing photomultipliers that receive light from beam splitter behind entrance slit; 6, wooden boxes.

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