Formula of f
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by thinhnh3009
What is the formula to caculate the f on the y-axis ?
Thank youPosted
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by thinhnh3009
https://drive.google.com/file/d/0B5eVaYKwc5gJVzFoeUdDQ2p4X28/view
Link to the image
Posted
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by Budgieye moderator
I would think that the flux is traced from the patterns of on the photographic plate. It must be standardized somehow.
http://classic.sdss.org/dr7/products/spectra/
Flux values, redshifts, line-widths, and continuum levels are computed
for common rest-frame ultraviolet and optical emission lines by
fitting multiple Gaussian-plus-background models at their observed
positions within the spectra.http://www.sdss.org/dr13/algorithms/redshifts/
Posted
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by thinhnh3009
Thank you very much
Posted