David's presentation on the verification datasets at the LSST2015 meeting.
Weekly Meeting
Wed 10-11am PT
Blue Jeans link: http://ls.st/vkv or https://bluejeans.com/788706616/
Meeting Agenda/Minutes
Goal
Run large precursor datasets through the stack “end-to-end” and manually inspect the results. Treat them as if we were going to do science on them.
Want datasets to test the stack in regimes of four primary science drivers:
- Dark Energy / Dark Matter
- Solar System
- Transients
- Milky Way
Want datasets to test two main categories of data products:
- Level 1, Alert Production (difference imaging, transients)
- Level 2, Data Release Production (deep stacks, “static” sky)
Want datasets taken in different environments (e.g. crowded/sparse regions, good/bad seeing, etc.).
We need multiple datasets since no existing survey spans all these regimes the way LSST will.
The Datasets
DECam
All of the public raw and CP-reduced DECam data can be downloaded from the NOAO Science Archive.
COSMOS field, PI: Dey (PropID: 2013A-0351)
- Deep (~26 AB mag), 3 sq. deg., ugrizY
- Lots of existing datasets and catalogs for reference
Bulge survey, PI: Saha (PropID:2013A-0719)
- ~3500 shallow frames (~700 per field), ~3500 deep frames (~7000 per field)
- Crowded field, looking for variables
Solar system objects, PI: Allen (PropID: 2013A-0724, 2013B-0536)
- Covering large area, looking for solar system objects
- ~3900 60s r-band images public so far
HiTS survey, PI: Forster (PropID: 2014A-0608, 2015A-0608)
- Difference imaging, transients, SNe
- ~2800 images of 40 fields going public in 2015B (almost all g) and more in 2016B
- ~100-150s exposures, most g (~7000) and r (~1000)
- ~50 fields, ~30-40 epochs per field
SMASH survey, PI: Nidever (PropID:2013A-0411,2013B-0440)
- 180 fields, ~30 frames per field
- Magellanic Clouds and periphery
- Crowded and sparse fields
- Stripe82 data, useful reference field with good astrometry and photometry from SDSS
- Eventually want to run the full dataset through the stack
CFHT
- Deep, ~25 mag, ugriz, 154 sq. deg
- To be run by our French colleagues at IN2P3 (Dominique Boutigny et al.)
- The stack is already set up to run on CFHT data
HSC
HSC COSMOS data
- Very good seeing, very deep (deeper than 10yr LSST)
- Telescope/camera similar to LSST
- Won't be publicly available until March 2016
- The stack is already set up to run on HSC data
LSST Simulations
- Still need to figure out what we want/need
- But important to test that the stack is ready for LSST data