Instrumentation for the Large Binocular Telescope Stefan Hanke
Instrumentation for the Large Binocular Telescope Stefan Hanke 4 th student workshop 2007
LBT @ Mt. Graham, Arizona Stefan Hanke 4 th student workshop 2007
LBT @ Mt. Graham, Arizona Stefan Hanke 4 th student workshop 2007
The instruments for the LBT Stefan Hanke 4 th student workshop 2007
LBC Blue & Red (Large Binocular Camera) • Wide-field imaging cameras • Located at Prime Focus stations • Fo. V 23‘x 23‘ • Blue: 320 -500 nm, Red: 500 -1000 nm Stefan Hanke 4 th student workshop 2007
LUCIFER (LBT NIR spectroscopic Utility with Camera and Integral Field Unit for Extragalactic Research) Stefan Hanke 4 th student workshop 2007 NIR imager and spectrograph for: • Seeing & diffraction limited direct imaging • Seeing & diffraction limited long-slit-spectroscopy • MOS spectroscopy
LBT-I (Large Binocular Telescope – Interferometer) Nulling beam combiner in thermal IR Stefan Hanke 4 th student workshop 2007
PEPSI (Potsdam Echelle Polarimetric and Spectroscopic Instrument) • High resolution spectrograph Stefan Hanke 4 th student workshop 2007 • Identical but independent units allow simultaneous observation of circularly and linearly polarized light
MODS (Multi-Object Double Spectrograph) • Mid resolution Multi-Object-Spectrograph • Tandem Mode for full 12 m Aperture • 330 -1100 nm, 6‘x 6‘ Stefan Hanke 4 th student workshop 2007
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‘‘x 11‘‘ Fo. V @ 20 mas • MCAO (2, later 3 layers) with mutiple (up to 20) NGS • Pyramid-Wavefront-Sensors • so much more to tell. . . Stefan Hanke 4 th student workshop 2007
LINC-NIRVANA Piston mirror unit GLWFS DM units Bench & sub-structure MHWFS Stefan Hanke 4 th student workshop 2007 Cryostat with Detector & FFTS
Optical Bench Carbon fiber for light weight and minimal thermal expansion High stiffness to allow varying vector of gravity Stefan Hanke 4 th student workshop 2007
The wavefrontsensors of LN ● (M)HWS moveable DM in LN ● 349 actuators piezostack (commercial) ● 8 guide stars ●Mid: 4 -8 km High: 10 -15 km ●first interferometry only with HWS ● Stefan Hanke 4 th student workshop 2007 GWS ●runs Adaptive Secondary Mirror ● 672 actuators voice coils ● 12 natural guide stars runs
Piston-Mirror-System 2, 7 kg Aluminium with a resolution of few nm and a frequency up to 200 Hz Stefan Hanke 4 th student workshop 2007
An unusual PSF 8. 4 m 23 m Stefan Hanke 4 th student workshop 2007 8. 4 m resolution 8. 4 m 23 m resolution
Simulated stars with LN 11´´ typical Fo. V (1´´) Stefan Hanke 4 th student workshop 2007
Observations with LN +60° Reconstructed 23 m Resolution 0° Stefan Hanke 4 th student workshop 2007 -60°
Performance of LN Combination of: ●field of view (F) ●resolution (R) ●sensitivity (S) Stefan Hanke 4 th student workshop 2007
Thank you Stefan Hanke 4 th student workshop 2007 Stefan Hanke Student Workshop 2005
- Slides: 19