photometry
TRANSCRIPT
RGB 3 images
502nm 656nm 673nm
H-alpha SIIOIII
Origin of the lines
• These lines are the result of atoms jumping from one state to another
• Different atoms have different spectral signatures
• Observation of a line can tell us exactly what atom is responsible.
• Dark lines are the result of atoms absorbing light, and bright lines are due to atoms emitting light.
Pillars ofCreation
創造之柱
Evaporating Gaseous Globules,EGGs 星蛋
Credit: NASA, ESA, STScI, J. Hester and P. Scowen (Arizona State University)
Credit: T.A.Rector, B.A.Wolpa, J. Hester, P. Scowen, NASA, ESA, and The Hubble Heritage Team (STScI/AURA), STScI.
M16 Eagle Nebula 鷹狀星雲
Credit: www.genesis16.net
CCD – Charged Couple Device
Credit: Molecular Expressions, Florida State University
Credit: Molecular Expressions, Florida State University
Credit: Molecular Expressions, Florida State University
Credit: Molecular Expressions, Florida State University
Credit: Molecular Expressions, Florida State University
Credit: Molecular Expressions, Florida State University
Credit: Sky & Telescope
Aperture Photometry