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Instrumentation for the Large Binocular Telescope Stefan Hanke

Instrumentation for the Large Binocular Telescope Stefan Hanke. LBT @ Mt. Graham, Arizona. LBT @ Mt. Graham, Arizona. The instruments for the LBT. LBC Blue & Red (Large Binocular Camera). Wide-field imaging cameras Located at Prime Focus stations FoV 23‘x23‘

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Instrumentation for the Large Binocular Telescope Stefan Hanke

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  1. Instrumentation for the Large Binocular TelescopeStefan Hanke

  2. LBT @ Mt. Graham, Arizona

  3. LBT @ Mt. Graham, Arizona

  4. The instruments for the LBT

  5. LBC Blue & Red(Large Binocular Camera) • Wide-field imaging cameras • Located at Prime Focus stations • FoV 23‘x23‘ • Blue: 320-500nm, Red: 500-1000nm

  6. LUCIFER(LBT NIR spectroscopic Utility with Camera and Integral Field Unit for Extragalactic Research) • NIR imager and spectrograph for: • Seeing & diffraction limited direct imaging • Seeing & diffraction limited long-slit-spectroscopy • MOS spectroscopy

  7. LBT-I(Large Binocular Telescope – Interferometer) Nulling beam combiner in thermal IR

  8. PEPSI(Potsdam Echelle Polarimetric and Spectroscopic Instrument) • High resolution spectrograph • Identical but independent units allow simultaneous observation • of circularly and linearly polarized light

  9. MODS(Multi-Object Double Spectrograph) • Mid resolution Multi-Object-Spectrograph • Tandem Mode for full 12m Aperture • 330-1100nm, 6‘x6‘

  10. LINC-NIRVANA(LBT INterferometric Camera – Near IR/Visible Adaptive INterferometer for Astronomy • NIR Beam Combiner • True imaging ‚Fizeau‘-interferometry • 0.6-2.4 µm, 11‘‘x11‘‘ FoV @ 20mas • MCAO (2, later 3 layers) with mutiple (up to 20) NGS • Pyramid-Wavefront-Sensors • so much more to tell...

  11. LINC-NIRVANA Piston mirror unit GLWFS DM units Bench & sub-structure MHWFS Cryostat with Detector & FFTS

  12. Optical Bench Carbon fiber for light weight and minimal thermal expansion High stiffness to allow varying vector of gravity

  13. The wavefrontsensors of LN • GWS • runs Adaptive Secondary Mirror • 672 actuators voice coils • 12 natural guide stars • (M)HWS runs moveable DM in LN • 349 actuators piezostack (commercial) • 8 guide stars • Mid: 4-8km High: 10-15km • first interferometry only with HWS

  14. Piston-Mirror-System 2,7kg Aluminium with a resolution of few nm and a frequency up to 200Hz

  15. 8.4m resolution 23m resolution 23m An unusual PSF 8.4m 8.4m

  16. typical FoV (1´´) Simulated stars with LN 11´´ 11´´

  17. +60° Reconstructed 23m Resolution 0° -60° Observations with LN

  18. Performance of LN Combination of: • field of view (F) • resolution (R) • sensitivity (S)

  19. Thank you Stefan Hanke Student Workshop 2005

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