spectroheliograph

(redirected from spectroheliographic)
Also found in: Encyclopedia.

spec·tro·he·li·o·graph

 (spĕk′trō-hē′lē-ə-grăf′)
n.
An instrument used to make spectroheliograms.

spec′tro·he′li·o·graph′ic adj.
spec′tro·he′li·og′ra·phy (-ŏg′rə-fē) n.

spectroheliograph

(ˌspɛktrəʊˈhiːlɪəˌɡrɑːf; -ˌɡræf)
n
(Astronomy) 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]
ˌspectroˌhelioˈgraphic adj

spec•tro•he•li•o•graph

(ˌspɛk troʊˈhi li əˌgræf, -ˌgrɑf)

n.
an apparatus for making a photograph of the sun (spectroheliogram) in a single spectral band.
[1890–95]
spec`tro•he`li•o•graph′ic, adj.