Slitlessutils is a package for simulating and extracting wide-field slitless spectroscopy (WFSS) data, highly focused on data from the Advanced Camera for Surveys (ACS) and Wide-Field Camera 3 (WFC3) on the Hubble Space Telescope.

Slitlessutils is under active development software and subject to change.

The latest released version of this package can be installed using pip from the command line:

pip install slitlessutils

To install the latest development version of this repository, please use:

pip install git+https://github.com/spacetelescope/slitlessutils.git

You also need to obtain the calibration (reference) files, which are stored in a public box folder, which can be done with the slitlessutils config objects. Please see configuring slitlessutils for instructions and examples. Please see our documentation for additional installation instructions and/or methods.

We have encountered several frequently-asked questions and give some examples our FAQ page.