24 Feb. 2026 - mini-AG LPCA

Corentin Ravoux, Philipe Rosnet

ACCEL² simulation

ZTF calibration effort

• ZTF = Zwicky Transient Facility
• High-cadence photometric telescop in the Palomar observatory
• Very large field of view (47 deg²)
• Transient sky: Supernovae, gamma ray burst, tidal distruptive events, comets, asteroids

Corentin Ravoux                                                                                                                                                                           mini-AG - February 2026

ZTF calibration effort

• IN2P3 effort on calibrating ZTF supernovae luminosity
• 4 labs involved: LPCA, IP2I (Lyon), CPPM (Marseille) & LPNHE (Paris)
• Effort close to completion (ZTF DR2.5): organization of small workshop to focus on finalizing data and paper completion
• Decision and application of a blinding scheme
• Room 106 (EUPI) in the campus: adapted for workshop format

Corentin Ravoux                                                                                                                                                                           mini-AG - February 2026

Workshop organization

Corentin Ravoux                                                                                                                                                                           mini-AG - February 2026

Wednesday: Review of the efforts

Thursday & Friday: Intensive workshop

Workshop organization

Corentin Ravoux                                                                                                                                                                           mini-AG - February 2026

Workshop organization

Corentin Ravoux                                                                                                                                                                           mini-AG - February 2026

Workshop organization

Corentin Ravoux                                                                                                                                                                           mini-AG - February 2026

Status on ZTF calibration

Corentin Ravoux                                                                                                                                                                           mini-AG - February 2026

• Complicated pipeline with a lot of dependencies
• Dedicated campaign for filter calibration in Palomar: article writing/last details
• Camera: article writing
• Light-curve calibration with other surveys (HSC, SNLS): In the last steps
• On-sky photometric calibration: article writing/last details
• Instrumental corrections: Final full prod

Conclusion

• ZTF SN Ia IN2P3 calibration effort is close to completion

• Workshop focused on direct work and discussions

• EUPI 106 room adapted for talks and work for 20-30 people

ACCEL² simulation

Details on the talks

Details on the talks