Claire Juramy
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View article: Photometric Redshift Estimation for Rubin Observatory Data Preview 1 with Redshift Assessment Infrastructure Layers (RAIL)
Photometric Redshift Estimation for Rubin Observatory Data Preview 1 with Redshift Assessment Infrastructure Layers (RAIL) Open
We present the first systematic analysis of photometric redshifts (photo-z) estimated from the Rubin Observatory Data Preview 1 (DP1) data taken with the Legacy Survey of Space and Time (LSST) Commissioning Camera. Employing the Redshift A…
View article: A transmission hologram for slitless spectrophotometry on a convergent telescope beam. Optimisation and characterization
A transmission hologram for slitless spectrophotometry on a convergent telescope beam. Optimisation and characterization Open
This article details the optimisation and the characterisation of the hologram described in a companion paper published in 2021, which showed the superiority of a holographic optical element over a periodic grating as a disperser installed…
View article: StarDICE III: Characterization of the photometric instrument with a Collimated Beam Projector
StarDICE III: Characterization of the photometric instrument with a Collimated Beam Projector Open
The measurement of Type Ia supernovae magnitudes provides cosmological distances, which constrain dark energy parameters. Current and upcoming large photometric surveys require improved photometric calibration precision to reduce systemati…
View article: The Spectroscopic Stage-5 Experiment
The Spectroscopic Stage-5 Experiment Open
The existence, properties, and dynamics of the dark sectors of our universe pose fundamental challenges to our current model of physics, and large-scale astronomical surveys may be our only hope to unravel these long-standing mysteries. In…
View article: How the StarDICE photometric calibration of standard stars can improve cosmological constraints?
How the StarDICE photometric calibration of standard stars can improve cosmological constraints? Open
The number of type Ia supernova (SNe Ia) observations will grow significantly within the next decade, mainly thanks to the Legacy Survey of Space and Time (LSST) undertaken by the Vera Rubin Observatory in Chile. With this improvement, sta…
View article: LSST Camera focal plane optimization
LSST Camera focal plane optimization Open
Proceedings of the SPIE SPIE Astronomical Telescopes + Instrumentation conference 16-22 JUNE 2024
View article: LSST camera verification testing and characterization
LSST camera verification testing and characterization Open
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan
View article: Integrating the LSST camera
Integrating the LSST camera Open
SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan
View article: StarDICE II: Calibration of an Uncooled Infrared Thermal Camera for Atmospheric Gray Extinction Characterization
StarDICE II: Calibration of an Uncooled Infrared Thermal Camera for Atmospheric Gray Extinction Characterization Open
The StarDICE experiment strives to establish an instrumental metrology chain with a targeted accuracy of 1 mmag in griz bandpasses to meet the calibration requirements of next-generation cosmological surveys. Atmospheric transmission is a …
View article: StarDICE II: calibration of an uncooled infrared thermal camera for atmospheric gray extinction characterization
StarDICE II: calibration of an uncooled infrared thermal camera for atmospheric gray extinction characterization Open
The StarDICE experiment strives to establish an instrumental metrology chain with a targeted accuracy of 1 mmag in griz bandpasses to meet the calibration requirements of next-generation cosmological surveys. Atmospheric transmission stand…
View article: StarDICE: a photometric calibration experiment to anchor standard stars on the NIST flux scale at the milli-magnitude level
StarDICE: a photometric calibration experiment to anchor standard stars on the NIST flux scale at the milli-magnitude level Open
International audience
View article: Slitless spectrophotometry with forward modelling: Principles and application to measuring atmospheric transmission
Slitless spectrophotometry with forward modelling: Principles and application to measuring atmospheric transmission Open
Context. In the next decade, many optical surveys will aim to answer the question of the nature of dark energy by measuring its equation-of-state parameter at the per mill level. This requires trusting the photometric calibration of the su…
View article: Characterization and performance of an upgraded front-end-board for NectarCAM
Characterization and performance of an upgraded front-end-board for NectarCAM Open
This paper presents an analysis of the updated version of the Front-End Board (FEB) for the NectarCAM camera, developed for the Cherenkov Telescope Array Observatory (CTAO). The FEB is a critical component responsible for reading and conve…
View article: Performances of an upgraded front-end-board for the NectarCAM camera
Performances of an upgraded front-end-board for the NectarCAM camera Open
The Front-End Board (FEB) is a key component of the NectarCAM camera, which has been developed for the Medium-Sized-Telescopes (MST) of the Cherenkov Telescope Array Observatory (CTAO). The FEB is responsible for reading and converting the…
View article: Performances of an upgraded front-end-board for the NectarCAM camera
Performances of an upgraded front-end-board for the NectarCAM camera Open
The Front-End Board (FEB) is a key component of the NectarCAM camera, which\nhas been developed for the Medium-Sized-Telescopes (MST) of the Cherenkov\nTelescope Array Observatory (CTAO). The FEB is responsible for reading and\nconverting …
View article: Slitless spectrophotometry with forward modelling: principles and application to atmospheric transmission measurement
Slitless spectrophotometry with forward modelling: principles and application to atmospheric transmission measurement Open
In the next decade, many optical surveys will aim to tackle the question of dark energy nature, measuring its equation of state parameter at the permil level. This requires trusting the photometric calibration of the survey with a precisio…
View article: StarDICE
StarDICE Open
Context . The Hubble diagram of type-Ia supernovae (SNe-Ia) provides cosmological constraints on the nature of dark energy with an accuracy limited by the flux calibration of currently available spectrophotometric standards. This motivates…
View article: StarDICE I: sensor calibration bench and absolute photometric calibration of a Sony IMX411 sensor
StarDICE I: sensor calibration bench and absolute photometric calibration of a Sony IMX411 sensor Open
The Hubble diagram of type-Ia supernovae (SNe-Ia) provides cosmological constraints on the nature of dark energy with an accuracy limited by the flux calibration of currently available spectrophotometric standards. The StarDICE experiment …
View article: Design, assembly and validation of the Filter Exchange System of LSSTCam
Design, assembly and validation of the Filter Exchange System of LSSTCam Open
International audience
View article: Measurement of telescope transmission using a Collimated Beam Projector
Measurement of telescope transmission using a Collimated Beam Projector Open
The number of type Ia supernova observations will see a significant growth within the next decade, especially thanks to the Legacy Survey of Space and Time undertaken by the Vera Rubin Observatory in Chile. With this rise, the statistical …
View article: Laboratory Measurements of Instrumental Signatures of the LSST Camera Focal Plane
Laboratory Measurements of Instrumental Signatures of the LSST Camera Focal Plane Open
Electro-optical testing and characterization of the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) Camera focal plane, consisting of 205 charge-coupled devices (CCDs) arranged into 21 stand-alone Raft Tower Modules (RTMs)…
View article: Laboratory measurements of instrumental signatures of the LSST camera focal plane
Laboratory measurements of instrumental signatures of the LSST camera focal plane Open
Electro-optical testing and characterization of the Vera C. Rubin Observatory\nLegacy Survey of Space and Time (LSST) Camera focal plane, consisting of 205\ncharge-coupled devices (CCDs) arranged into 21 stand-alone Raft Tower Modules\n(RT…
View article: The shape of the photon transfer curve of CCD sensors
The shape of the photon transfer curve of CCD sensors Open
The photon transfer curve (PTC) of a CCD depicts the variance of uniform images as a function of their average. It is now well established that the variance is not proportional to the average, as Poisson statistics would indicate, but rath…