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To see a discussion of spectral energy density models, see this page.
throughput/
For "normal" LSST baseline evaluations, use the files in "baseline".
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If you are only concerned with calculating expected magnitudes for LSST in various bandpasses, then you really only need the 'baseline' throughputs.
throughputs/atmos/
# v1.0 atmospheres from David Burke, MODTRAN, March 1, 2010.
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atmos_12_hiwater.dat and atmos_12_lowater.dat are attempts (by Lynne Jones) to take the modtran outputs from David Burke and use these to munge a 30% higher and lower water component. These were created by taking the 1.0 and 1.6 airmass atmospheres and using the water components from those atmospheres instead of the water component from the 1.2 airmass atmosphere. (this should probably be redone properly with MODTRAN).
throughputs/baseline/
# From Docushare collection 1777, v1.0, March 2010.
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All curves are in nanometers, with throughput represented by a number between 0 and 1.
throughputs/imsim/
This directory contains the throughput curves represented by the imsim images.
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- atmosphere (imsim raytrace uses its own simulated atmosphere, and does so in a series of screens)
- filter throughput (raytrace uses the actual incident angle of the photons to predict how they will travel through the filter, rather than just the response averaged over a variety of incident angles - which is what is represented in these single curves - they are averaged to an incident angle of about 14 degrees)
- detector sensitivity (raytrace simulates the detector's response to photons, along with various coatings on the detector surface).
throughputs/megacam/
# Megacam filter throughput curves http://www2.cadc-ccda.hia-iha.nrc-cnrc.gc.ca/megapipe/docs/filters.html
throughputs/sdss/
# SDSS throughput curves from http://www.sdss.org/dr3/instruments/imager/index.html#filters
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