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KIDS Survey with VISTA and OmegaCAM: Advancements in Infrared and Optical Astronomy

The KIDS survey utilizes the VISTA 4m telescope and the OmegaCAM optical camera at the Paranal Observatory to explore 1500 sq. deg. in nine bands, enabling detailed galaxy-galaxy lensing studies and dark energy investigations. VISTA's InfraRed camera features 16.2k x 2k detectors with 0.35" pixels, while OmegaCAM employs 32.2k x 4k detectors with 0.21" pixels. The telescopes, with operational nodes dating back to 2008, leverage advanced active optics for superior imaging quality. Discoveries from these surveys contribute significantly to our understanding of the universe.

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KIDS Survey with VISTA and OmegaCAM: Advancements in Infrared and Optical Astronomy

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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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