Spectroheliogram

Definitions

  • Webster's Revised Unabridged Dictionary
    • n Spectroheliogram (Astrophysics) A photograph of the sun made by monochromatic light, usually of the calcium line (k), and showing the sun's faculæ and prominences.
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Century Dictionary and Cyclopedia
    • n spectroheliogram A photograph of the sun made by means of the spectroheliograph with monochromatic light, usually that; of one of the violet calcium lines (K or H), and showing the details of the sun's surface and surroundings as they would appear if no other kind of light were emitted.
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Etymology

Webster's Revised Unabridged Dictionary
Spectrum, + heloi-, + -gram,

Usage


In science:

From the analysis of simultaneous Kitt Peak Ca ii Kline spectroheliograms and photospheric magnetic area scans, Sivaraman et al. (2000) showed the association of internetwork K2V bright points with magnetic features, con firming the earlier results of Sivaraman & Livingston (1982).
The relationship between chromospheric emissions and magnetic field strength
VAULT is specifically designed to obtain high spectral purity, zero dispersion spectroheliograms in the Lyman-α (1216 ˚A) resonance line of hydrogen.
The Structure and Dynamics of the Upper Chromosphere and Lower Transition Region as Revealed by the Subarcsecond VAULT Observations
The authors investigated spectroheliograms of active region fan loops produced from Fe viii and Si vii lines.
Off-limb (spicule) DEM distribution from SoHO/SUMER observations
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