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SUMMARY:First laboratory results from FOURIER\, the initial science combin
 er at the MROI - Dan Mortimer (Cavendish Astrophysics)
DTSTART:20210127T110000Z
DTEND:20210127T113000Z
UID:TALK156835@talks.cam.ac.uk
CONTACT:David Buscher
DESCRIPTION:Optical interferometry enables observations on spatial scales 
 as small as a few milliarcseconds\, allowing for unique science such as di
 rectly observing the inner few astronomical units around nearby pre-main s
 equence stars and imaging stellar disks. It is not without its limitations
  however\, one of which is the limiting magnitude an interferometer and it
 s beam combiner (science instrument) can reach. The Magdalena Ridge Observ
 atory Interferometer (MROI) is a next generation array designed to address
  this shortcoming and perform observations on targets five to seven magnit
 udes fainter than is currently possible at other arrays. In line with this
  goal the array’s initial science beam combiner\, FOURIER\, is strictly 
 optimised for sensitivity leading to a novel design.\n\nIn this talk I wil
 l outline the main science requirements and discuss how the design of FOUR
 IER contributes to meeting these requirements. I will also present the fir
 st laboratory characterisation of the instrument including validation of t
 he PSF profile\, demonstration of high contrast fringes\, and the spectral
  resolution of the instrument. I will conclude by discussing the path to d
 eployment of FOURIER at the MROI ahead of the first science observations a
 t the array.\n
LOCATION:Battcock Tea area
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