SLIDE 1
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
SLIDE 2 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
SLIDE 3 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
- ut to DESC.
SLIDE 4
- 10 New Strategies and Counting (now ~16)
What is given in the white paper call?
SLIDE 5
- OpSim: Picked best possible observation from list of
- bservations 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
- ver global schedule properties.
- Rolling versions of each of these.
What additional surveys can we analyze?
SLIDE 6
How much does this matter? A lot. See N. Regnault’s talk.
SLIDE 7 How much does this matter? A lot.
From Husni Almoubayyed showing bias on the cosmic shear induced by typical PSF modeling errors (and
- ther weak lensing systematics with similar profiles), as a function of angular separation.
SLIDE 8
How much does this matter? A lot. The precision of time delays from strong lens systems. From S. Suyu, S. Huber
SLIDE 9
What would we like to add?
SLIDE 10
What would we like to add? See H. Awan’s talk
SLIDE 11
Where should the extra DDF be? Answer: We want to match where fields of other surveys are Takeaway is overlap with WFIRST/Euclid
SLIDE 12
Where should the extra DDF be?
Plot from D. Rubin
Thinking here-ish
SLIDE 13
Where should the extra DDF be?
Plot from D. Rubin
Thinking here-ish
SLIDE 14
Where should the extra DDF(s) be?
SLIDE 15
- 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
Final Notes
