Posted by: destinyofaries on: January 10, 2009
Spectroscopy is a branch study in astronomy that focus on astronomical objects’ spectrum. From the spectrum, we can get informations, such as its temperatures, chemical compositions, movement speed, etc. That’s why spectroscopy can be considered as one of the fundamental field in astronomy. The spectrum of a star (or any other astronomical object) is acquired [...]
Tags:
absorption spectrum,
Annie J. Cannon,
astronomy,
Balmer series,
barnard,
blue shift,
chemical composition,
continuous spectrum,
Doppler shift,
emission spectrum,
energy,
Hertzprung-Russell diagram,
Kirchoff law,
line of sight,
linear motion,
lines,
luminosity class,
photon,
Planck,
proper motion,
quantum law,
quantum physics,
radial velocity,
red shift,
Rydberg constant,
spectrograph,
spectroscopy,
spectrum,
spectrum class,
star motion,
star's spectrum,
tangential velocity,
temperature,
true motion
Posted by: destinyofaries on: December 7, 2008
Photometry is a branch field of astrophysics which learned the quantity, quality, and the direction of the electromagnetic radiation from the sky’s objects. “Photo” in photometry which means “visual light” was used because the observation was used to limited in visual light.
Photometry was based on our knowledge about radiation law. We hypothesize [...]
Tags:
astronomy,
astrophyics,
belajar astronomy,
black body,
brightness,
energy,
flux,
photometry,
power,
radiation,
Stefan-Boltzman constant,
Wien's Law
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