First starlight spectrum captured using an integrated photonic micro-spectrograph

N. Cvetojevic*, N. Jovanovic, C. Betters, J. S. Lawrence, S. C. Ellis, G. Robertson, J. Bland-Hawthorn

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

59 Citations (Scopus)


Photonic technologies have received growing consideration for incorporation into next-generation astronomical instrumentation, owing to their miniature footprint and inherent robustness. In this paper we present results from the first on-telescope demonstration of a miniature photonic spectrograph for astronomy, by obtaining spectra spanning the entire H-band from several stellar targets. The prototype was tested on the 3.9 m Anglo-Australian telescope. In particular, we present a spectrum of the variable star π 1 Gru, with observed CO molecular absorption bands, at a resolving power R = 2500 at 1600 nm. Furthermore, we successfully demonstrate the simultaneous acquisition of multiple spectra with a single spectrograph chip by using multiple fibre inputs.

Original languageEnglish
Article numberL1
Pages (from-to)1-4
Number of pages4
JournalAstronomy and Astrophysics
Publication statusPublished - 2012


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