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Ralf Siebenmorgen IR instrument from Antarctica (thermal) IR instruments from Antarctica: what can be gained Ralf Siebenmorgen Why? pwv, T, aerosols IR projects: DomeC and elsewhere Science cases Conclusion: my favoured modes (thermal) IR := 2-24m = K,L,M,N,Q

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Ralf Siebenmorgen IR instrument from Antarctica Atmospheric optical thickness spectrum

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Ralf Siebenmorgen IR instrument from Antarctica Atmospheric transmission 1 - 2.5m opens up OH emission remains K dark filter Paranal Dome C (30m)

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Ralf Siebenmorgen IR instrument from Antarctica Paranal Dome C (30m) Atmospheric transmission

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Ralf Siebenmorgen IR instrument from Antarctica Atmospheric transmission Paranal Dome C (30m)

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Ralf Siebenmorgen IR instrument from Antarctica Sky background: temperature

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Ralf Siebenmorgen IR instrument from Antarctica Burton et al. 2005 Sky background: - PWV Low: - temperature - aerosol

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Ralf Siebenmorgen IR instrument from Antarctica Beckers08 8m 30m

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sky coverage 4-6 LGSs (cone effect) Correction on axis 1 deformable mirror 2 1

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Wide corrected FoV 5 LGSs/ WFSs 1 DM FoV ~ 6 LTAO

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PSF uniformity >6 LGSs/ WFSs >3 NGS >2 DM improve corrected FoV 2 1

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Tower solution Technical issues maintenace GLAO -> next talk by Marcell Carbillet

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Tower solution Beckers08 Vibration Footing Thermal bending Icing maintenance

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Ralf Siebenmorgen IR instrument from Antarctica Dome sizes

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Ralf Siebenmorgen IR instrument from Antarctica Dome sizes

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IR projects at Dome C This session : IRAIT (International Robotic Antarctic IR Tel.) Maurizo Busso AMICA (Antarctic Multiband IR Camera ) Mauro Dolci

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IR projects at Dome C WHITE 2.4m tel. 0.3 resolution 0.7deg 2 fov 1-5m ? Surveys LMC weak lensing SN(z