Spectrum of various chemical elements as used below
Testing Shelyak Education Spectroscope
Newbie CD SPECTRO
Make a CD spectroscope vie peeling !
Quick making the CD spectroscope for Canon SX230/220HS cameras
Canon SX230/220HS Spectroscope
Aspect of a High pressure Sodium far streetlight
as seen when centered on peeled CD hole (at about 5 cm from eye)
!!!! NEVER USE this for the SUN !!!!
The yellow-red is main Sodium D-line, the turquoise is also a Sodium band, most of the other bands from green to violet arise from contained Mercury.
Wide angle ----- Middle zoom
Max zoom mosaic (also enhanced)
Unobstructed fashion neon bulb ---- improvised slit !
Slit result ...
Estimated size and position ... See Ne reference graph below
Spectra software : most interesting !
click on the Moon spectrum below for a camcorder demo (4Mo) first in normal light then in nightshot mode...
the diffraction grating being just put in front of the lens !
Objects visible in the movie are the Moon and street lights.
Note that the spectrum is oriented with the blue towards the luminous object !
This is usefull to know when you have many stars and spectra mixed in your images ...
New : 20070919, 10 x 2 min exposures combined with Registax4
Thanks very much to Benjamin Mauclaire for his work with SpcAudace on this Vega spectrum resulting in this astonishing result :
2007/10/02 : New work being done with same material :
click here for 1024 size above picture , here for full size and here for full size B&W
Gilbert Grillot is actively developing SpectroTilt with me !
Below the spectrum of a streetlight obtained in the same conditions ...
Celestron 8 with plastic grating from fun eye
glasses, 1" before focal plane
White dot shows dark bands on Venus (first time) spectrum