Optical design of the Dragonfly interferometric imager

J. Gordon Robertson; Peter G. Tuthill; Sylvestre Lacour

doi:10.1117/12.787687

28 July 2008 Optical design of the Dragonfly interferometric imager

J. Gordon Robertson, Peter G. Tuthill, Sylvestre Lacour

Proceedings Volume 7013, Optical and Infrared Interferometry; 70133R (2008) https://doi.org/10.1117/12.787687
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

Abstract

Dragonfly is designed to overcome the blurring effects of the Earth's atmosphere and achieve high dynamic range observations of bright objects close to the diffraction limit of a large ground-based telescope. Injection of the sub-pupil images into single-mode fibres will provide both spatial filtering and reformatting of the redundant pupil array into a non-redundant output suitable for interferometry. We describe the optical system which includes (i) interface with an Adaptive Optics system (ii) pupil fragmentation and injection into 36 single-mode fibres (iii) fibre path-length matching (iv) a beam combiner with spectral dispersion and output to a Low Light Level CCD detector.

Citation Download Citation

J. Gordon Robertson, Peter G. Tuthill, and Sylvestre Lacour "Optical design of the Dragonfly interferometric imager", Proc. SPIE 7013, Optical and Infrared Interferometry, 70133R (28 July 2008); https://doi.org/10.1117/12.787687

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