LRS Throughput Estimates
It is important for the PI to realize that due to the design of the
HET the effective collecting area changes over a trajectory. Near the
end of a trajectory the HET has half the collecting area that it has near
the middle. As such two medium length visits centered
on middle of a track could be more valuable than a single long visit.
All throughput estimates are based upon center of track efficiency.
To see the effect of changing exposure times in a moving aperture try the HET Filling Factor Calculator.
Below we give the estimated on-sky performance for LRS2-B and LRS2-R in 10E-16 ergs (A) and in AB-mag (B) under a dark sky with 2x30 minute exposures with 1.2" FWHM image quality, ie. best possible conditions.
As we gain more information we will update these plots or generate a throughput calculator.
Last updated: Thu, 23 Nov 2017 16:04:01 -0600 shetrone