2nd semestre, 2017

Date

Speaker

Title (click on it to see Repository)

Aug 17

Elvis Cantelli

using LmFit for simple data fitting

Aug 31

Romain Thomas

How to feed a python (script)? From basic input to TUI/GUI

Sep 14

Alessandro Razza

CCDproc: data reduction with Python

Sep 28

CANCELLED

no speaker

Oct 12

Alessandro Razza

CCDproc: advanced applications

Oct 26

CANCELLED

no speaker

Nov 9

CANCELLED

speaker sick

Nov 23

Julian Mejia (U.Chile)

PYSPECKIT: Spectroscopic analysis toolkit for astronomy.

Dec 7

Jan Bolmer

PyMC (v.2.3.6) applied to absorption line analysis.

Dec 21

CANCELLED

Merry Christmas! See you in 2018



using LmFit for simple data fitting
Elvis Cantelli
Abstract
Lmfit provides a high-level interface to non-linear optimization and curve fitting problems for Python. It builds on and extends many of the optimization methods of scipy.optimize. The advantage is the ease on parameter settings, change of fitting algorithms, estimation of confidence intervals, and multiple model combination and a set of ready-to-use fitting models. I'll show some examples like line deblending and continuum estimation.
Repository
- Example code.


How to feed a python (script)? From basic input to TUI/GUI
Romain Thomas
Abstract
I will briefly show different methods to give information to a python script/code and show some application examples. I will start with (very) basic inputs and file reading and move to (slightly) more advanced topics with command line interfaces and configuration file reading. If we have time we will see some Text based User interface (TUI) and graphical user interface (GUI) development.
Repository
- Presentation in PDF


CCDproc: data reduction with Python
Alessandro Razza
Abstract
Ccdproc is a package, affiliated to AstroPy, for basic data reduction of CCD images. This package provides the necessary tools for processing images, in the same way as the IRAF task CCDPROC does. In addition to the reduction process, I will present the ccdproc built-in classes CCDData including data uncertainties, ImageFileCollection for working with directories of images and Combiner for combining and clipping images.
Repository
- Example code.


CCDproc: advanced applications
Alessandro Razza
Abstract
This is a follow-up of the first session where ccdproc python package was presented. Few applications such as processing the images to make master frames, creating a bad pixel mask and projecting the images into the same system of coordinates will be shown. There is no need of any background from the first session on ccdproc.
Repository
- Example code.


PYSPECKIT: Spectroscopic analysis toolkit for astronomy.
Julian Mejia (U.Chile)
Abstract
Here I present the PYSPECKIT package for python which is designed for emission/absorption line and continuum fitting in astronomy.
Repository
- Example code.


PyMC (v.2.3.6) applied to absorption line analysis.
Jan Bolmer
Abstract
I will give a short introduction to PyMC (v.2.3.6), a python module for implementing Bayesian statistical models and fitting algorithms, and I will explain how I use it to fit absorption lines to X-shooter GRB afterglow spectra.
Repository
- Presentation (PDF)


A new package: photutils
Alessandro Razza
Abstract
photutils performs source segmentation, background estimation, PSF matching and more on photometric images. In this talk I will introduce this package.
Repository
-