Articles tagged with 'photometry'

Resource: Transit light curve equations

Description: Mandel & Agol (2002) transit light curve equations
Homepage URL: http://astro.ucla.edu/~ianc/python/transit.html

Routines that calculate various transit light curve equations:

  • occultuniform() – uniform-disk transit light curve
  • occultquad() – quadratic limb-darkening
  • occultnonlin() – full (4-parameter) nonlinear limb-darkening
  • occultnonlin_small() – small-planet approximation with full nonlinear limb-darkening.
  • t2z() – convert dates to transiting z-parameter for circular orbits.

Posted by aldcroft

Resource: astropysics

Description: Astrophysics utilities for python
Homepage URL: http://packages.python.org/Astropysics/
Development: lp:astropysics

"Astropysics is a library containing a variety of utilities and algorithms for reducing, analyzing, and visualizing astronomical data."

This package is in the early development stages and aims to replicate the capabilities and utility provided by the broad IDL-astro library.  It currently has a few GUI applications, include a spectrum plotter, and these ...

Posted by virtualastronomer

Blog: Spectral analysis tools?

Kelle writes:

I'm looking for preexisting code to do two things:

1) given an observed spectrum and a filter profile, compute mags

2) given a spectrum and two wavelengths, measure equivalent widths of absorption/emission lines.  similar to the 'e' function in splot (IRAF).

Posted by aldcroft

Resource: pysynphot

Description: Replacement for the IRAF synphot package
Homepage URL: https://trac6.assembla.com/astrolib

pysynphot is a synthetic photometry software package suitable for either library or interactive use. Intended as a modern-language successor to the IRAF/STSDAS synphot package, it provides improved algorithms that address known shortcomings in synphot, and its object-oriented design is more easily extensible than synphot's task-oriented approach. It will run under PyRAF, and ...

Posted by tom