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The star is moving away fro where it is. ~Justine... :))

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Q: What does it mean when an astronomers observing starlight wa spectrograph notices shift at off lines to the red end of spectrum?
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What part of a star is it that astronomers study in order to learn its characteristics of a star?

Primarily, it's spectrum (it's light seen through a spectrograph).


What is the difference between Aston's mass spectrograph and Dempster's mass spectrometer?

what is difference between mass spectrograph and mass spectrum


Instrument used by astronomers to spread light?

A spectroscope is used to diffuse the light from a star into its spectrum, so that astronomers can analyze the elements that make up the star. The same sort of instrument can be used to analyze the elemental composition of ANYTHING; for terrestrial uses, the instrument is called a spectroGRAPH.


What does a spectrograph help determine?

The elemental composition of the materiel forming the spectrum.


What splits starlight into a spectrum of different colors?

The electro magnetic spectrum - A prism can split light into a spectrum of colors, and starlight is light. Detail your question and you will have a detailed answer, if this answer does not do the job


The spectrum of a star is called a what?

... a photonic 'fingerprint'. The picture of a star's spectral lines is its photo-spectrograph.


What is a device that separates the light from stars and other objects according to wavelength in order to produce a spectrum?

spectrograph


What kind of spectrum do astronomers find most useful?

The continuous spectrum is extremely important to astronomers. Objects as well as gasses can be located by the direct wavelengths that are presented at any time.


How can the color of starlight reveal the temperature of a star?

The colour of starlight reveals the temperature of a star by wavelengths in the electromagnetic spectrum, to give a measuring tool for star temperature.


What two regions of the electromagnetic spectrum are best utilized by ground based astronomers?

The two regions of the electromagnetic spectrum are best utilized by ground based astronomers are optical and radio.


What can a stars spectrum tell astronomers about a star?

What elements the star is made of.


What can a stars spectrum can tell astronomers?

What makes up the star or element.