34 citations · 58 across the 4 of their papers we have counts for
6 papers
Comparing the contrast performance of two IFU technologies for exoplanet direct imaging with ELT-PCS
Ryan Griffiths, Siddharth Maharana, Matthias Tecza
A key science goal for the Planetary Camera and Spectrograph (ELT-PCS) instrument is to image rocky exoplanets in reflected light around nearby M- and K-dwarfs. These observations…
HARMONI at ELT: line spread functions in a diffraction limited spectrometer
Stephen P. Todd, Éamonn J. Harvey, Anna MacIver +8
HARMONI is the first light, adaptive optics assisted, near-IR integral field spectrograph for the ELT. It covers a spectral range from 800~nm to 2450~nm with resolving powers from…
Single-star optical turbulence profiling techniques for the SHIMM and other Shack-Hartmann instruments
Ryan Griffiths, Timothy Butterley, Richard Wilson +1
Atmospheric optical turbulence (OT) monitoring is crucial for site characterisation at astronomical observatories and optical communications ground stations. The Shack-Hartmann Ima…
Adapting CNNs for Fisheye Cameras without Retraining
Ryan Griffiths, Donald G. Dansereau
The majority of image processing approaches assume images are in or can be rectified to a perspective projection. However, in many applications it is beneficial to use non conventi…
A comparison of next-generation turbulence profiling instruments at Paranal
Ryan Griffiths, Lisa Bardou, Timothy Butterley +6
A six-night optical turbulence monitoring campaign has been carried at Cerro Paranal observatory in February and March, 2023 to facilitate the development and characterisation of t…
Demonstrating 24-hour continuous vertical monitoring of atmospheric optical turbulence
Ryan Griffiths, James Osborn, Ollie Farley +3
We report what is believed to be the first example of fully continuous, 24-hour vertical monitoring of atmospheric optical turbulence. This is achieved using a novel instrument, th…