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The KiDS survey

The KiDS survey. VISTA 4m telescope 0.6 sq.deg. InfraRed camera 16 2kx2k detectors 0.35” pixels. VST 2.6m telescope 1 sq.deg. optical camera (OmegaCAM) 32 2kx4k detectors 0.21” pixels. PARANAL OBSERVATORY. 440 nights. 250 nights. The VST (Naples obs.).

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The KiDS survey

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  1. The KiDS survey

  2. VISTA 4m telescope 0.6 sq.deg. InfraRed camera 16 2kx2k detectors 0.35” pixels VST 2.6m telescope 1 sq.deg. optical camera (OmegaCAM) 32 2kx4k detectors 0.21” pixels PARANAL OBSERVATORY 440 nights 250 nights

  3. The VST(Naples obs.) • VST: 2.6m f/5.5, 1.4 deg F field, active primary mirror • Only one instrument: OmegaCAM = 16k x 16k CCD camera • Operational in 2008

  4. OmegaCAM 300 million pixels, 36 CCDs

  5. Active optics / autofocus

  6. 60 b=45 30 -75 b=-60 SDSS + UKIDSS 2dF 1500 sq.deg. in ugriZYJHK +2000 sq.deg. in i (+UKIDSS YJHK) 2dF

  7. KIDS + VIKING • VST/OmegaCAM: 1 sq deg, 2.6m telescope • VISTA/VISTACAM: 0.6 sqdeg, 4m telescope • 1500 sq.deg. of ugri (~400n VST) + ZYJHK (~200n VISTA) • Deeper in r, with good seeing • VST 2m deeper than SDSS (1m shallower than CFHTLS) • VISTA 1.5m deeper than UKIDSS

  8. VST status • New mirrors on the mountain • Telescope main structure on mountain • Mirror cell + actuators redesigned • Commissioning 1st half 2008.

  9. disassembly

  10. salerno

  11. livorno

  12. To Paranal

  13. Aug 3: On Paranal !

  14. Summary • 1500 sq.deg. U - K survey (9 bands) • Photoz’s with few outliers • Lensing from r band images (zmed~0.8) • Dark energy from BAO, wk.lensing, gg lensing • Main focus will be galaxy-galaxy lensing

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