› Forums › General Discussion › Quantum Efficiency › Reply To: Quantum Efficiency
17 May 2025 at 10:37 pm
#629953

Participant
Note that even if you know the QE of the camera, this is not enough to flux calibrate the spectrum as there are many other effects between the sun and the camera sensor. The atmosphere and the grating efficiency are the main ones. You need a known light source to flux calibrate spectra. For astronomical spectroscopy this is done by measuring a star with a known spectrum as described in my document here
http://www.threehillsobservatory.co.uk/astro/Relative_flux_calibration_20221222.pdf
but that would not be straightforward with your setup.
Can you describe in more detail what you are trying to measure about the solar spectrum ?
Cheers
Robin