- an apparatus for making photographs of the sun with a monochromatic light to show the details of the sun's surface and surroundings as they would appear if the sun emitted only that light.
Origin of spectroheliograph
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for spectroheliograph
In the subterranean chamber is the spectroheliograph of exceptional size and power.Astronomy
He moved to the spectroheliograph, where the zed-ray connections were still humming.
- an instrument used to obtain an image of the sun in light of a particular wavelength, such as calcium or hydrogen, to show the distribution of the element over the surface and in the solar atmosphere. The image obtained is a spectroheliogram
C19: from spectro- + helio- + -graph