How-To: Make a $20 spectrograph (from MAKE Volume 24)

Image (6) IMG_3064-thumb-600×400-58875.jpg for post 82231

By , 11/17/2010 @ 2:53 pm= | Full size is 600 × 400 pixels

  • Date Taken: 08-Feb-2009 00:45:06
  • Camera: Canon EOS 20D
  • Focal Length: 28mm
  • Aperture: f/3.5
  • ISO: 200