LSSTDESC
Enhance sky glow and other sky structure in the ESO model.
Currently the sky glow model by @yoachim in
https://github.com/lsst/sims_skybrightness
based on the ESO model with twilight addition includes sky glow but it does not have any structure. It is just an overall brightness level adjustment.
Brian Stalder (@bstalder) points us to the work he did with Chris Stubbs to measure the variation at the LSST site as outlined in this paper:
https://arxiv.org/pdf/1002.3637.pdf
Note that the PhoSim model is based on 2MASS measurements in the IR as documented here:
Adams & Skrutskie 1996, 2MASS Airglow Experiment Final Report.
http://faculty.virginia.edu/skrutskie/airglow/airglow.html
Sky glow variation along with other spatial varying effects should be added to the model. This is also related to #12 which is for adding clouds.
Unfortunately we didn't make a power spectrum of the spatial variation, but probably tracks the J, H since they are both derived from OH excitation. Our measured y band p-p variation was about 4%, but the overall background level varied by more than a factor of 2 over a few nights.
It would be an interesting exercise to grab DECAM and/or HSC data and do ISR, mask sources, and then look at residuals (and power spectrum) compared to the smooth sky model.
@RobertLuptonTheGood points to this paper
https://www.aanda.org/articles/aa/abs/2014/07/aa23908-14/aa23908-14.html
For a nice discussion of sky glow variability.