The KiDS survey

1
The KiDS survey
2
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
(No Transcript)
5
(No Transcript)
6
OmegaCAM
300 million pixels, 36 CCDs
7
Active optics / autofocus
8
SDSS UKIDSS
2dF
2dF

• 1500 sq.deg. in ugriZYJHK
• 2000 sq.deg. in i (UKIDSS YJHK)

9
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

10
VST status

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

11
disassembly
12
salerno
13
livorno
14
To Paranal
15
Aug 3 On Paranal !
16
Summary

• 1500 sq.deg. U - K survey (9 bands)
• Photozs with few outliers
• Lensing from r band images (zmed0.8)
• Dark energy from BAO, wk.lensing, gg lensing
• Main focus will be galaxy-galaxy lensing