The DESC Observing Strategy Task Force Response to the Project White Paper Call by Dan Scolnic and Michelle Lochner on behalf of LSST DESC ObsStrat Task Force
What is our plan for the response? • ObsStrat Task Force Formed with representatives from each WG • Plan on ObsStrat GitHub • Two ‘brief’ white papers following Project Latex template - one WFD, one DDF and mini-surveys • Two journal-ready papers for detail • Small projects written as stand-alone papers
What is our plan for the response? • Project want reproducible metrics • Our top goal to ~reproduce SRD FoM assessment for multiple strategies • Need quantitative and qualitative priorities • August 10, First assessment of subset of WFD and mini-survey strategies, with metrics. Slides from each WG. • September 15, Full assessment of strategies and metrics due for task force • October 25, Revised white papers sent out to DESC.
What is given in the white paper call? • 10 New Strategies and Counting (now ~16)
What additional surveys can we analyze? • OpSim: Picked best possible observation from list of observations for 10 years. • Feature-Based: No set lists of observations, pick where to observe based on number of features including what is behind, filter change time.. • Alt-Sched [Rothchild/Stubbs]: Follows preprogrammed path: no merit function,parameters give explicit control over global schedule properties. • Rolling versions of each of these.
How much does this matter? A lot. See N. Regnault’s talk.
How much does this matter? A lot. From Husni Almoubayyed showing bias on the cosmic shear induced by typical PSF modeling errors (and other weak lensing systematics with similar profiles), as a function of angular separation.
How much does this matter? A lot. The precision of time delays from strong lens systems. From S. Suyu, S. Huber
What would we like to add?
What would we like to add? See H. Awan’s talk
Where should the extra DDF be? Answer: We want to match Takeaway is overlap where fields of other with WFIRST/Euclid surveys are
Where should the extra DDF be? Thinking here-ish Plot from D. Rubin
Where should the extra DDF be? Thinking here-ish Plot from D. Rubin
Where should the extra DDF(s) be?
Final Notes Join #desc-obs-strat for discussion • Branches for each issue on github.com/LSSTDESC/ObsStrat/ • — monitor here for write-ups - it is public Have already seen huge range of impact from 10 different • survey strategies So far, Weak Lensing, SNe, Strong Lensing very excited about • increasing number of visits for WFD
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