Asteroid Spectroscopy

Observational Methodologies
Standard star (S) observations
interspersed with asteroid (A)
observations.
5S 10A 5S 10A 5S 10A 5S
Allows extinction coefficients
to be calculated (slopes).
Slope & intercept allows flux of
star to be calculated at each
channel at the same airmass
as each asteroid observation.
Dividing the raw asteroid flux
curve by the calculated star
flux curve removes the
atmospheric absorptions.
A slope-intercept pair
for each channel