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DECam , NEOs , LSST: Lessons (to be) learned

DECam , NEOs , LSST: Lessons (to be) learned. David E. Trilling 2012 LSST AHM That’s a lot of acronyms. What is an NEO?. What is an NEO?. NEO = Near Earth Object. Why do we care about NEOs ?. Nearest neighbors to the Earth

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DECam , NEOs , LSST: Lessons (to be) learned

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  1. DECam, NEOs, LSST:Lessons (to be) learned David E. Trilling 2012 LSST AHM That’s a lot of acronyms

  2. What is an NEO?

  3. What is an NEO? NEO = Near Earth Object

  4. Why do we care about NEOs? • Nearest neighbors to the Earth • Flow of material from elsewhere in the Solar System – a cosmochemical probe • Sometimes they hit the Earth! • Congressional mandate to characterize impact risk from objects >140 meters

  5. DECam + NEOs • DECam: The Dark Energy Camera on the NOAO Blanco 4-meter telescope • Field of view: 3 square degrees • Primarily used for Dark Energy Survey, but community time available as well • We (PI: Lori Allen) nominally will have some SV time as well as some regular (shared-risk) time later this fall • NASA funding

  6. DECam + NEOs: Etendue! S S (4 m) (0.5 m)

  7. Survey strategy • The vast majority of our detected objects will be too faint for NEO-oriented telescopes in the South (aperture limited) • We will do self-recovery • Interleave “new” and “repeat” nights • So many NEOs per pointing that we can just revisit the same pointings for recovery • Important: NOT targeted follow-up. Just re-scan

  8. Survey strategy 1,3,5 2,4,6 1,3,5 2,4,6 NEO motion

  9. Survey issues • Data volume (1 GB each) and data transfer • We will use ~1 minute images • Image pre-processing (How? What?) • Moving object identification (MOPS) • Rapid turn-around – do we need this? Why? No one else can recover these objects.

  10. Sound familiar? • Etendue: Bigger than everyone else (in the South) • Follow-up: No one else can do it • Data volume and data transfer: Big • Image pre-processing: How? • Rapid turnaround: How fast do we really need?

  11. Sound familiar? • Etendue: Bigger than everyone else (in the South) • Follow-up: No one else can do it • Data volume and data transfer: Big • Image pre-processing: How? • Rapid turnaround: How fast do we really need? LSST

  12. Lessons (to be) learned • Survey strategy • Self-followup • Data processing and data volume • Data to Tucson, pre-processing • MOPS elsewhere • Rapid follow-up • No

  13. Lessons (to be) learned • Survey strategy • Self-followup • Data processing and data volume • Data to Tucson, pre-processing • MOPS elsewhere • Rapid follow-up • No • But in six months’ time this might be a very different talk!

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