cfastie | 4 spectra |
The iPhone does a good job focusing on the spectral lines but the quality of the image cannot compare to that of the Nikon D40 with macro lens. The iPhone overexposes the spectral lines even when t...
cfastie | 2 spectra |
Neon peaks from NIST database and peaks from a neon sign. It looks like I need more of the fainter peaks from the database.
NIST reference lines for mercury and spectral lines from a CFL bulb. Hg peaks at 405.4, 436.6, and 546.5 are well calibrated.
CFL peaks and reference peaks for a typical CFL. Some peaks do not match well, maybe because not all CFL bulbs have phosphors with the same Tb and Eu compounds.
Neon peaks from NIST database and peaks from a neon sign