ScopeSim Templates

This packages contain a number of templates to generate Source objects to be used in simulations with the ScopeSim Simulator

The Documentation can be found here: https://scopesim-templates.readthedocs.io/en/latest

Installation

The best way to install the software is to use pip

pip install scopesim_templates

To install the development version you can clone the repository

git clone https://github.com/AstarVienna/ScopeSim_Templates/
cd ScopeSim_Templates
pip install -e .

Requirements

• numpy
• astropy
• synphot
• ScopeSim
• speXtra
• pyckles

The Source object

The above functions are created to easy the creation of standard sources but the power of the Source object doesn't end there and can be used to create endless sources possibilities.

In a nutshell a Source object contains a spacial and spectral description of the sources. The spectral description are in the form of synphot spectra and the spacial description can be an astropy table referencing the spectra or a fits image. Source can also accept datacubes. The speXtra package contains an extensive library of spectral templates that can be used with the sources. Please check the relevant documentation.

Source templates included

Currently, the package covers the most typical sources used in astronomy:

• stellar

  • star: Places a single star on the field
  • stars: Places a list of stars on the field
  • star_field: Creates field of stars with random positions
  • star_grid: Creates a field of stars with regular positions
  • cluster: Creates an age=0 cluster with a user selected mass

• extragalactic

  • galaxy: A simple sersic model with a user selected SED from the speXtra database
  • galaxy3D: A more complex model that includes a velocity field and velocity dispersion field
  • spiral_two_component: Simple two component model with an outer spiral young SED and an old SED bulge
  • elliptical: Another sersic model using the Brown SEDs

• misc

  • point_source: similar to star but using any SED from the speXtra database
  • uniform_source: Creates a uniform source with any SED from speXtra
  • source_from_file: Load the source from a fits file. Depending on the characteristics othe functions may be more suitable
  • source_from_imagehdu: creates a source from an ImageHDU with an arbitrary flux and scale
  • source_from_imagehdu_with_flux: creates a source from an ImageHDU where the flux/pixel is known
  • source_from_array: General function to create a source from a 2D numpy array
  • source_from_cube: Wrapper to create a source from a 3D datacube

• calibration

  • lamp: Simulates a calibration lamp, i.e. a homogenous source with emissions lines
  • flat_field: Simulates a flat field
  • empty_sky: To simulate a sky without no other sources

Please see the documentation how to use each particular source and contact us (raise an issue or submit a pull request) if more specialized sources are needed.