|
Carbon stars are
a class of stars off the Main Sequence which are very cool, deep
red and their maximum luminosity is in the near IR. I first discovered
for myself carbon stars years ago when I was a visual observer
their super deep red colors, made even more obvious in larger
apertures. For each of these examples, I have examined them just
before imaging their spectrums visually and still find it enjoyable
to see the rich red colors like a glowing ember in a campfire.
Carbon stars are
red from the molecule Carbon Monoxide in their atmospheres, and
we also find many other molecules because of their lower temperatures.
The spectrums are crossed with molecular bands appearing not
as single sharp lines, but as diffuse broad features marking
the groups of very fine unresolved spectral lines of the compound.
Identification is from a variety of sources, the near IR end
contains both Terrestrial Oxygen and H20 bands well illuminated
by the bright background glow of the stars spectrum here.
|
Instrument: 12.5" f/5 Home made Newtonian
Grating: Star Analyzer 100 lpmm
Mount: Astrophysics 1200 QMD
CCD Camera: DMK51 Imaging Source
Location: Payson, Arizona, Elevation: 5150 ft.
Sky: Seeing FWHM = 5 arcsec , Transparency 9/10
Outside Temperature: 55 F
Image Processing Tools: RSpec for spectral extraction, Photoshop CS2
HOME GALAXIES EMISSION NEBS REFLECTION NEBS COMETS
GLOBULARS OPEN CLUST PLANETARIES LINKS
