This calc uses standard methods to take relativity into account while calculating the Doppler shift of electromagnetic radiation. The "object speed" is only the speed in the radial direction (i.e. away from the observer - use a negative value for travel towards the observer).
Davide Borchia
Emitted light
Wavelengh
nm
Frequency
THz
Observed light
Wavelength
nm
Frequency
THz
Redshift
z
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