Euclid on Sky
Open Access

Table A.1

Euclid ERO observations per proposal sorted by date.

ERO ID ERO project title Overview paper Field name Date Comments
ERO02 A first glance at free-floating baby Jupiters with Euclid Martín et al. (2025) NGC 1333 09-09-2023 1 ROS, bad guiding, few exposures
Taurus 09-09-2023 1 ROS, bad guiding, no data
NGC 1333 16-09-2023 1 ROS, bad guiding, few exposures
Taurus 16-09-2023 1 ROS, dither rotated
Horsehead 02-10-2023 1 ROS
Messier 78 12-10-2023 1 ROS
Barnard 30 12-10-2023 1 ROS
ERO03 Euclid view of Milky Way globular clusters Massari et al. (2025) NGC 6254 09-09-2023 1 ROS, dither rotated
NGC 6397 22-09-2023 1 ROS
ERO08 A Euclid Showcase of Nearby Galaxies Hunt et al. (2025) IC 10 03-09-2023 1 ROS, dither rotated
IC 10 06-09-2023 1 ROS, dither rotated
IC 342 02-10-2023 1 ROS
NGC 6744 02-10-2023 1 ROS
NGC 6822 12-10-2023 1 ROS
NGC 2403 12-10-2023 1 ROS
Holmberg II 28-11-2023 1 ROS, hints of stray light
ERO09 The Fornax galaxy cluster seen with Euclid Saifollahi et al. (2025) Fornax 23-08-2023 1 ROS, bad guiding, few exposures
Fornax 03-09-2023 1 ROS, bad guiding, few exposures
Fornax 06-09-2023 1 ROS, bad guiding, few exposures
Dorado 28-11-2023 1 ROS
ERO10 The Perseus cluster of galaxies Cuillandre et al. (2025) Perseus 09-09-2023 2 ROS, dither rotated
Perseus 16-09-2023 2 ROS, dither rotated
ERO11 A glimpse into Euclid’s Universe through a giant magnifying lens Atek et al. (2025) Abell 2390 28-11-2023 3 ROS
Abell 2764 28-11-2023 3 ROS

Notes. The project ID was assigned across all submitted proposals based on distance.

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