SPECTROSCOPY
FIRST
LIGHT SPECTRA
November
2002
All
taken with 100 lines/mm grating and unmodified Vesta Pro Webcam mounted on
VC200L at f9
STREET LAMPS APPROX 1.5km AWAY
SHOWING ABSORPTION BAND IN NIR
PRESENT IN PLANET SPECTRUM BUT ABSENT IN RING SPECTRUM (METHANE?)
SHOWS COMMON ABSORPTION BANDS
(MOSTLY EARTH'S ATMOSPHERE?) AND THAT BETELGEUSE (TYPE M) IS COOLER (REDDER)
THAN ALDEBARAN (TYPE K)