Speaker
Sergei Kulkov
Description
We present our simultaneous broadband multi-wavelength HBT measurement in a spectrometer with a 25 nm range, 0.1 nm/pixel scale based on the 512-pixel SPAD sensor of the LinoSPAD2 detector. Using an LED as a broadband source of light simulating starlight, we measure the HBT effect in tens of spectral bins. Detector resolution of 40 ps rms allows us to achieve 3% contrast in under 10 hours of measurement. As a result, this allows for a factor of 10 improvement in astrometric uncertainty.
