Testing Shelyak Education Spectroscope (600 l/mm)
Note : looking in the eyepiece of the spectroscope delivers a much cleaner and precise vue of the spectra especially much thiner and contrasted absorption lines !
Sony A7s, 50 mm lens and Baader "Clickstop Digital Camera Adapter"
The spectroscope is firmly squeezed in the center of a standard Scotch tape roll :)
High Pressure Sodium (at night, in the street near by) 1s, ISO 1600
Real proportions of original shot on Full Frame sensor :
Real proportions of original shot on Sony A7s APS-C mode sensor :
Processed (RegiStax6 after 16 bit Tiff conversion of ARW = Sony RAW)
Neon light on multiple plug sockets 1s, ISO 6400
Daylight (aiming at bright clouds) 1s, ISO 250
Tungsten Lamp 1/40s, ISO 100
Classic Neon tube 1/5s, ISO 100
Folded modern economic Neon bulb 1/5s, ISO 100
Cooking blue gas flame 2.5s, ISO 8000