https://github.com/gabraganca/instprofile

Obtain the instrumental profile from the spectrum of a lamp.
https://github.com/gabraganca/instprofile

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Obtain the instrumental profile from the spectrum of a lamp.

• Host: GitHub
• URL: https://github.com/gabraganca/instprofile
• Owner: gabraganca
• License: bsd-3-clause
• Created: 2014-04-06T09:13:19.000Z (almost 11 years ago)
• Default Branch: master
• Last Pushed: 2017-07-12T14:58:41.000Z (over 7 years ago)
• Last Synced: 2024-11-15T08:39:32.845Z (2 months ago)
• Language: Jupyter Notebook
• Size: 305 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.rst
  • License: LICENSE

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README

        
Instrumental Profile

====================

When one observes the spectrum of a source of light, the x-axis of the spectrum

is in pixels. To convert this to wavelengths, it is used a spectrum of a well

know source of light, e.g., the light of a lamp of ThAr. The spectrum of the

lamp has known emission lines, thus it is possible to convert from pixel to

wavelength.

From theory, the emission lines of the lamp spectrum should be infinitely

narrow. Unfortunately, this does not happens because of the optics of the

instrument, which broadens the spectrum. When studying spectral lines of

unknown sources, this broadening effect has to be considered.

Installation

------------

The only dependency is `numpy `_. To install it, clone or

download this repository and then:

::

    python setup.py install

or:

::

    python setup.py build

    pip install .

How to use it

-------------

I made an `IPython notebook`__ showing how one can obtain the instrumental

profile from a lamp spectrum. I used a spectrum of a real lamp to show it.

__ http://nbviewer.ipython.org/urls/raw.githubusercontent.com/gabraganca/instprofile/master/example/Instrumental_Profile.ipynb