SIMBAD references

2019MNRAS.485.3595L - Mon. Not. R. Astron. Soc., 485, 3595-3599 (2019/May-3)

Towards a mid-infrared L band up-conversion interferometer: first on-sky sensitivity test on a single arm.

LEHMANN L., GROSSARD L., DELAGE L., REYNAUD F., CHAUVET M., BASSIGNOT F., MARTINACHE F., MORAND F., RIVET J.-P., SCHMIDER F.-X. and VERNET D.

Abstract (from CDS):

We report on the first on-sky sensitivity test on a single arm of the Astronomical Light Optical Hybrid Analysis (ALOHA) instrument, an uncooled up-conversion interferometer in the L band (3.5 µm). Despite a low coupling efficiency (in the range of 1 per cent) between the 1-m class telescope and our instrument, we detect a magnitude Lmag = 2.8 star with a signal-to-noise ratio SNR = 2.7 over a 30 min integration time and with a spectral resolution λ/Δλ = 100. As the ALOHA project aims to shift light from the L band to the near-infrared, the use of very low loss silica optical fibres is an important step towards fibre-linked very long-baseline interferometry in the mid-infrared.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): instrumentation: detectors - instrumentation: high angular resolution - techniques: interferometric

Simbad objects: 5

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