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(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)
Ralf Siebenmorgen

IR := 2-24µm = K,L,M,N,Q
IR instrument from Antarctica


Atmospheric optical thickness spectrum

Ralf Siebenmorgen

IR instrument from Antarctica


Atmospheric transmission
1 - 2.5µm opens up OH emission remains Kdark filter

Paranal Dome C (30m)

Ralf Siebenmorgen

IR instrument from Antarctica


Atmospheric transmission

Paranal Dome C (30m)

Ralf Siebenmorgen

IR instrument from Antarctica


Atmospheric transmission

Paranal Dome C (30m)

Ralf Siebenmorgen

IR instrument from Antarctica


Sky background: temperature

Ralf Siebenmorgen

IR instrument from Antarctica


Sky background:

Burton et al. 2005

Ralf Siebenmorgen

- PWV Low: - temperature - aerosol

IR instrument from Antarctica


Beckers'08

8m

30m

Ralf Siebenmorgen

IR instrument from Antarctica


NGS

ingle

onjugate sky coverage

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

2' 1'


LTAO
Wide corrected FoV

5 LGSs/ WFSs 1 DM FoV ~ 6'

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

2' 1'


GLAO -> next talk by Marcell Carbillet

Tower solution
·Technical issues ·maintenace


maintenance

Tower solution

· · · ·

Vibration Footing Thermal bending Icing
Beckers'08


Dome sizes

Ralf Siebenmorgen

IR instrument from Antarctica


Dome sizes

Ralf Siebenmorgen

IR instrument from Antarctica


IR projects at Dome C

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


IR projects at Dome C
WHITE · 2.4m tel. · 0.3" resolution · 0.7deg2 fov · 1-5µm ? Surveys · LMC · weak lensing · SN(z<0.2) PI: Denis Burgarella


IR projects at Dome C


IR projects at Dome C


MIR instrument at Dome C
Point source sensitivity 10/1h K 2µJy L 80µJy M 200µJy N 8mJy Q 200mJy
Burton et al `05

N band: pfov 0.5"; 1kx1k detector
Mora et al. (this session)

Ralf Siebenmorgen

IR instrument from Antarctica


Present MIR instruments: <8m

Ralf Siebenmorgen

IR instrument from Antarctica


Present MIR instruments: 8m

4

Ralf Siebenmorgen

IR instrument from Antarctica


R~900

Ralf Siebenmorgen

IR instrument from Antarctica


Ralf Siebenmorgen

IR instrument from Antarctica


Dome C: IR sensitivities in context
flux [ mJy]

NACO

NACO

Dome C ~VLT

Spitzer

0.1

1

10

Ralf Siebenmorgen

IR instrument from Antarctica


Science in the Galaxy
Evolution of proto-planetary & debris spectral index 3-10µm Formation of in MC:

surveys

: transits in K
Ralf Siebenmorgen

MIR spectro-polarisation
IR instrument from Antarctica


MIR spectra

Ralf Siebenmorgen

IR instrument from Antarctica


MIR spectro-pol

IR3481

Wright'08

Ralf Siebenmorgen

IR instrument from Antarctica


Monitoring of X-ray flares of the GC at 10µm

Ralf Siebenmorgen

IR instrument from Antarctica


MIR surveys

Whitney `08
Ralf Siebenmorgen IR instrument from Antarctica


SN light curves in K

+ rapid monitoring at high z

Burgarella `08
Ralf Siebenmorgen IR instrument from Antarctica


IR instruments from Antarctica: - 2m telescope (+ tower) -Surveys
wide field imaging: K,L band SED: K,L,M,N,Q low resolution spectro-polarisation in N

-Monitoring
Sgr A* SN GRB
Ralf Siebenmorgen IR instrument from Antarctica