Debian Astro Tools packages

ALFA measures fluxes in emission line spectra, such as those of planetary nebulae and HII regions, using a genetic algorithm to rapidly optimise fits to large numbers of lines simultaneously. It can subtract night sky emission lines before fitting the nebular lines if necessary. It can read plain text files containing 1D spectral data, or FITS files containing 1D, 2D or 3D datasets.

• Wesson, R.: ALFA: an automated line fitting algorithm. Monthly Notice of the Royal Astronomical Society 456:3774-3781 (2016) (eprint)

• Debian Astronomy Team
• Roger Wesson

• 2.2-1 (trixie)
• 2.2-1 (bookworm)
• 2.1-1 (bullseye)
• 2.2-1 (sid)
• 2.2-1 (forky)
• 2.3 (upstream)

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The aa program computes the orbital positions of planetary bodies and performs rigorous coordinate reductions to apparent geocentric and topocentric place (local altitude and azimuth). It also reduces star catalogue positions given in either the FK4 or FK5 system. Data for the 57 navigational stars is included. Most of the algorithms employed are from The Astronomical Almanac (AA) published by the U.S. Government Printing Office.

The aa program follows the rigorous algorithms for reduction of celestial coordinates exactly as laid out in current editions of the Astronomical Almanac. The reduction to apparent geocentric place has been checked by a special version of the program (aa200) that takes planetary positions directly from the Jet Propulsion Laboratory DE200 numerical integration of the solar system. The results agree exactly with the Astronomical Almanac tables from 1987 onward (earlier Almanacs used slightly different reduction methods).

Certain computations, such as the correction for nutation, are not given explicitly in the AA but are referenced there. In these cases the program performs the full computations that are used to construct the Almanac tables (references are provided).

• Thorsten Alteholz

• 5.6-9 (sid)
• 5.6-9 (forky)
• 5.6-8 (trixie)
• 5.6-7 (bookworm)
• 5.6-7 (bullseye)

field

astronomy

role

program

use

learning

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The casacore package contains the core libraries of the old AIPS++/CASA (Common Astronomy Software Applications) package. This split was made to get a better separation of core libraries and applications.

This package contains the tools built with CASA core:

• taql - query language for casacore tables
• measuresdata - create data tables for measures
• imageregrid, imagecalc, showtable, showtablelock, findmeastable, fits2table, imreorder, casahdf5support, msselect, image2fits, imageslice, etc.

• Debian Astro Team
• Ole Streicher

• 3.5.0-2 (bookworm)
• 3.3.0-4 (bullseye)
• 3.7.1-1 (trixie)
• 3.7.1-2 (forky)
• 3.7.1-2 (sid)

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Fitspng is an utility intended to convert of the natural high dynamic range of FITS images, directly representing measured data, to the limited numerical range of PNG format.

• Filip Hroch: Link to publication

• Debian Astronomy Team
• Filip Hroch

• 2.0-1 (bookworm)
• 1.4-1 (bullseye)
• 2.0-2 (trixie)
• 2.0-2 (forky)
• 2.0-2 (sid)

• 11 regular users
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Funtools, is a "minimal buy-in" FITS library and utility package developed at the High Energy Astrophysics Division of SAO. The Funtools library provides simplified access to a wide array of file types: standard astronomical FITS images and binary tables, raw arrays and binary event lists, and even tables of ASCII column data. A sophisticated region filtering library (compatible with ds9) filters images and tables using boolean operations between geometric shapes, support world coordinates, etc. Funtools also supports advanced capabilities such as optimized data searching using index files.

This package contains the tools.

• E. Mandel, S.S. Murray and J.B. Roll: Funtools: An Experiment with Minimal Buy-in Software. Astronomical Data Analysis Software and Systems X 238:225 (2001)

• Debian Astro Team
• Ole Streicher

• 1.4.8-1 (bookworm)
• 1.4.7-4 (bullseye)
• 1.4.8-1.1 (trixie)
• 1.4.8-2 (forky)
• 1.4.8-2 (sid)

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NEAT analyses lists of emission line fluxes measured from the spectra of photoionised nebulae such as planetary nebulae and HII regions. It determines the extinction, and then adopts a three zone model to determine temperatures, densities, and ionic and total abundances, from collisionally excited lines and recombination lines. It calculates uncertainties if required, using a Monte Carlo technique.

• R. Wesson, D. Stock and P. Scicluna: Understanding and reducing statistical uncertainties in nebular abundance determinations. Monthly Notice of the Royal Astronomical Society 422:3516-3526 (2012) (eprint)

• Debian Astronomy Team
• Roger Wesson

• 2.3.2-2 (bookworm)
• 2.3.2-2 (bullseye)
• 2.3.2-2 (trixie)
• 2.3.2-2 (forky)
• 2.3.2-2 (sid)
• 2.4.1 (upstream)

• 8 regular users
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Rawtran is an utility to convert of raw photos in .CR2, .CRW, MRW, NEF, RAF, etc. formats to the general astronomical FITS image format. The identification of raw photo type and decoding itself is done via DCRAW utility by D.Coffin.

• Filip Hroch: Link to publication

• Debian Astronomy Team
• Filip Hroch

• 1.1-1 (sid)
• 1.1-1 (bullseye)
• 1.1-1 (bookworm)
• 1.1-1 (trixie)
• 1.1-1 (forky)

• 11 regular users
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Voro++ is a software library for carrying out three-dimensional computations of the Voronoi tessellation. A distinguishing feature of the Voro++ library is that it carries out cell-based calculations, computing the Voronoi cell for each particle individually. It is particularly well-suited for applications that rely on cell-based statistics, where features of Voronoi cells (eg. volume, centroid, number of faces) can be used to analyze a system of particles.

• Rycroft, C.H.: Voro++: A three-dimensional Voronoi cell library in C++. Chaos 19:41111 (2009) (eprint)

• Debian Astronomy Team
• Roger Wesson

• 0.5+revert-to-0.4.6+dfsg1-1 (trixie)
• 0.5+revert-to-0.4.6+dfsg1-1 (forky)
• 0.5+revert-to-0.4.6+dfsg1-1 (bookworm)
• 0.5+revert-to-0.4.6+dfsg1-1 (sid)
• 0.5+revert-to-0.4.6+dfsg1-1 (bullseye)

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WCSTools is a set of software utilities, written in C, which create, display and manipulate the world coordinate system of a FITS or IRAF image, using specific keywords in the image header which relate pixel position within the image to position on the sky. Auxiliary programs search star catalogs and manipulate images.

This package contains the binary tools.

• Mink, Douglas J.: WCSTools: an Image Astrometry Toolkit. Astronomical Data Analysis Software and Systems VIII 172:498 (1999)

• Debian Astro Team
• Ole Streicher

• 3.9.7-1 (bookworm)
• 3.9.7-2 (forky)
• 3.9.7-2 (sid)
• 3.9.7-1.1 (trixie)
• 3.9.6-1 (bullseye)

• 15 regular users
• 26 recent
• 146 total installations (of 267811 submissions)

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The identification of asteroids and comets typically starts with the differential analysis of a series of images taken from the same area of the sky. Objects appearing to be moving are tracked over multiple days.

This software is fed with pixel positions in images in the context of the same for neighbouring stars. From these data it interpolates the position of the presumed near earth object. The results of this analyses are - if the quality of the data allows - sent to the minor planet center (MPC) for archival and comparisons with data from known objects.

• Debian Astro Maintainers
• Nilesh Patra

• 0.0~git20180227-5 (experimental)

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Tablator is a utility for converting tables in astronomy into different formats. Tablator can read and write tables in fits, ipac table, hdf5, votable, json, json5, csv, and tsv, and can write html. The emphasis is on speed, so all conversions are done in memory.

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