Three years of harvest with the vector vortex coronagraph in the thermal infrared
2016 (English)Conference paper (Refereed)
For several years, we have been developing vortex phase masks based on sub-wavelength gratings, known as Annular Groove Phase Masks. Etched onto diamond substrates, these AGPMs are currently designed to be used in the thermal infrared (ranging from 3 to 13 μm). Our AGPMs were first installed on VLT/NACO and VLT/VISIR in 2012, followed by LBT/LMIRCam in 2013 and Keck/NIRC2 in 2015. In this paper, we review the development, commissioning, on-sky performance, and early scientific results of these new coronagraphic modes and report on the lessons learned. We conclude with perspectives for future developments and applications.
Place, publisher, year, edition, pages
SPIE - International Society for Optical Engineering, 2016. Vol. 9908, 1-14 p., 99080Q
Engineering and Technology Astronomy, Astrophysics and Cosmology
IdentifiersURN: urn:nbn:se:uu:diva-301409DOI: 10.1117/12.2233289OAI: oai:DiVA.org:uu-301409DiVA: diva2:954543
SPIE Astronomical Telescopes and Instrumentation, Adaptive Optics Systems V, 26 Jun 26 - JUL 1, 2016, Edinburgh, UNITED KINGDOM