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This paper describes the general characteristics of raw data from fiber-fed spectrographs in general and fiber-fed IFUs in particular. The different steps of the data reduction are presented, and the techniques used to address the unusual…

Astrophysics · Physics 2010-11-11 S. F. Sanchez

Over 3 billion astronomical objects have been detected in the more than 22 million orthogonal transfer CCD images obtained as part of the Pan-STARRS1 $3\pi$ survey. Over 85 billion instances of those objects have been automatically detected…

The production of photometric light curves from astronomical images is a very time-consuming task. Larger data sets improve the resolution of the light curve, however, the time requirement scales with data volume. The data analysis is often…

Instrumentation and Methods for Astrophysics · Physics 2014-01-15 M. Todd , H. U. Wallon Pizarro , P. Tanga , D. M. Coward , M. G. Zadnik

We present a data reduction pipeline (DRP) for Keck/NIRSPEC built as an addition to the PypeIt Python package. The DRP is capable of reducing multi-order echelle data taken both before and after the detector upgrade in 2018. As part of…

SHallow REcurrent Decoders (SHRED) provide a deep learning strategy for modeling high-dimensional dynamical systems and/or spatiotemporal data from dynamical system snapshot observations. PySHRED is a Python package that implements SHRED…

Machine Learning · Computer Science 2025-07-29 David Ye , Jan Williams , Mars Gao , Stefano Riva , Matteo Tomasetto , David Zoro , J. Nathan Kutz

The newly installed Silmaril beam combiner at the CHARA array is designed to observe previously inaccessible faint targets, including Active Galactic Nuclei and T-Tauri Young Stellar Objects. Silmaril leverages cutting-edge optical design,…

One of the most important changes in observational astronomy of the 21st Century is a rapid shift from classical object-by-object observations to extensive automatic surveys. As CCD detectors are getting better and their prices are getting…

Astrophysics · Physics 2009-11-13 Andrej Prsa , Tomaz Zwitter

Astronomical photometry is the science of measuring the flux of a celestial object. Since its introduction, the CCD has been the principle method of measuring flux to calculate the apparent magnitude of an object. Each CCD image taken must…

Instrumentation and Methods for Astrophysics · Physics 2015-02-11 Paul Doyle

Fully automated astronomical data calibration and imaging pipelines are difficult to develop without a good prototyping method which permits to bridge the time between observatory commissioning and the moment when the special features and…

Instrumentation and Methods for Astrophysics · Physics 2021-12-21 Dirk Petry

Text-driven diffusion models have become increasingly popular for various image editing tasks, including inpainting, stylization, and object replacement. However, it still remains an open research problem to adopt this language-vision…

Computer Vision and Pattern Recognition · Computer Science 2024-07-17 Chenyang Qi , Zhengzhong Tu , Keren Ye , Mauricio Delbracio , Peyman Milanfar , Qifeng Chen , Hossein Talebi

Recent image restoration methods have produced significant advancements using deep learning. However, existing methods tend to treat the whole image as a single entity, failing to account for the distinct objects in the image that exhibit…

Computer Vision and Pattern Recognition · Computer Science 2023-07-04 Jiaxi Jiang , Christian Holz

Many approaches to astronomical data reduction and analysis cannot tolerate missing data: corrupted pixels must first have their values imputed. This paper presents astrofix, a robust and flexible image imputation algorithm based on…

Instrumentation and Methods for Astrophysics · Physics 2021-09-17 Hengyue Zhang , Timothy D. Brandt

We present the Collection of Elemental Routines for Echelle Spectra (CERES). These routines were developed for the construction of automated pipelines for the reduction, extraction and analysis of spectra acquired with different…

Instrumentation and Methods for Astrophysics · Physics 2017-02-15 Rafael Brahm , Andrés Jordán , Néstor Espinoza

Analysis of XRD diffraction patterns is one of the keystones of materials science and materials research. With the advancement of data-driven methods for materials design, candidate materials can be quickly screened for the study of a…

We describe the software requirement and design specifications for all-sky panoramic astronomical pipelines. The described software aims to meet the specific needs of super-wide angle optics, and includes cosmic-ray hit rejection, image…

Astrophysics · Physics 2009-11-13 Lior Shamir , Robert J. Nemiroff , David O. Torrey , Wellesley E. Pereira

We present a newly, fully automated, data pipeline: Solvepol, designed to reduce and analyze polarimetric data. It has been optimized for imaging data from the Instituto de Astronomia, Geofisica e Ciencias Atmosfericas (IAG) of the…

Instrumentation and Methods for Astrophysics · Physics 2017-11-15 Edgar A. Ramírez , Antônio M. Magalhães , James W. Davidson , Antonio Pereyra , Marcelo Rubinho

This paper describes the software DRAGraces (Data Reduction and Analysis for GRACES), which is a pipeline reducing spectra from GRACES (Gemini Remote Access to the CFHT ESPaDOnS Spectrograph) at the Gemini North Telescope. The code is…

Instrumentation and Methods for Astrophysics · Physics 2021-02-17 André-Nicolas Chené , Shunyuan Mao , Michael Lundquist , Eder Martioli , Jeffrey L. Carlin

We present the data reduction pipeline for the Hi-GAL survey. Hi-GAL is a key project of the Herschel satellite which is mapping the inner part of the Galactic plane (|l| <= 70\cdot and |b| <= 1\cdot), using 2 PACS and 3 SPIRE frequency…

Stellar atmosphere modelling predicts the luminosity and temperature of a star, together with parameters such as the effective gravity and the metallicity, by reproducing the observed spectral energy distribution. Most observational data…

Instrumentation and Methods for Astrophysics · Physics 2024-02-21 Iain McDonald , Albert A. Zijlstra , Nick L. J. Cox , Emma L. Alexander , Alexander Csukai , Ria Ramkumar , Alexander Hollings
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