Mr. David Huerta Profile

David Huerta

at European Southern Observatory

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Proceedings Article | 25 July 2024 Poster + Paper

ESO’s new generation of exposure time calculators

Henri M. Boffin, Jakob Vinther, Gurvan Bazin, David Huerta, Yves Jung, Lars Lundin, Malgorzata Stellert

Proceedings Volume 13098, 130982D (2024) https://doi.org/10.1117/12.3018325

KEYWORDS: Observatories, Telescopes, Signal to noise ratio, Observational astronomy, Image quality, Software development

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Users of astronomical observatories rely on Exposure Time Calculators (ETC) to prepare their proposals and then their observations. The ETC is therefore a crucial element in an observatory’s data workflow and in particular is key to optimize the use of telescope times. This is also true for the La Silla Paranal Observatory and ESO has therefore embarked in a project to modernize its ETC, based on a python back-end and an angular-based front-end, while also providing a programmatic interface. This ETC 2.0 has now been implemented for all the new Paranal and La Silla instruments (CRIRES, ERIS, HARPS/NIRPS, and 4MOST) and work is ongoing to implement it for MOONS. All the current ESO La Silla and Paranal instruments will also be migrated progressively, and the first one has been FORS2. The new ETC2 is based on the instrument packages, which should allow in the future a smooth interaction with the Phase one and Phase two observation preparation tools. Moreover, the ETC 2.0 framework has recently been upgraded and makes now use of the NgRx/Store technology in the front-end.

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