Spectrum of Iridium 96 passing over Norton, MA
At around 23:03 UT on 19 December we had a -7 Iridium flare, with the
track of the flare center passing right over our
Wheaton College Observatory! The only downside was that the flare was ~15 degrees from a
really bright (65% illuminated) moon.
Anyway, I tried a 300 lines/mm blazed grating (thanks to Ron Dantowitz) to see if I could catch a
spectrum of the flare. The result is shown above.
Hover mouse over the image to see a labeled version. Click on the image to
see the full size image.
The picture is not bright and therefore requires your monitor to be
properly calibrated. While a proper calibration of the monitor is time
consuming (and expensive), a quick (and dirty) way is to adjust your
monitor so that you can see ALL the 17 different shades in the image
below, in particular the darkest shades.
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Last updated: 2015 Dec 22.