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In a spectrograph, photons follow the path: Screwdriver> Camera> Network / prism> detector? [closed]

I have a doubt. Can I say that in a spectrograph, photons follow the path: slit> camera> network / prism> detector?
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0answers
16 views

Abundances of chemical determinations can be made from these observations cited bellow? [on hold]

Radial velocities of stars and galaxies are obtained from observations made with spectrographs. Abundances of chemical determinations can not be made from these observations instruments. Am I right?
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0answers
11 views

Spectral analysis of AGN (velocity dispersion of galaxy absorption, doppler shifts)

I was wondering what parameters I need to know/measure to calculate the velocity dispersion of a galaxy, specifically an AGN. Also, I have spectra where there are blueshifted and redshifted ...
6
votes
1answer
44 views

How much oxygen did the Warwick/Cambridge study find in the rocky debris around white dwarf GD 61?

There are several articles out saying that a Warwick/Cambridge study of ultraviolet spectroscopy data from the Cosmic Origins Spectrograph on the Hubble Space Telescope found a large amount of oxygen ...
6
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1answer
61 views

Current limitations in radio-astronomical spectrometry analysis of local interstellar cloud's hyperfine structures

I've been trying to wrap my head around capabilities of current radio-astronomical spectrometry technology to isolate not too distant tenuous sources, say, chemical composition and density of the the ...