Developed since 2012, PyKE offers a user-friendly way to inspect and analyze the pixels and lightcurves obtained by NASA's Kepler, K2, and TESS missions.
Documentation is hosted at pyke.keplerscience.org.
PyKE3 is the latest generation of the Kepler/K2/TESS toolkit. It provides the following key improvements:
- PyKE3 is now a pip-installable package and supports both Python 2 and 3
- tasks are now available both as command-line tools and Python functions
- PyKE3 no longer depends on PyRAF and is TESS-ready
- PyKE3 address performance issues specially noticeable in short-cadence data
- documentation and tutorials are now generated using Sphinx
- the development has been moved to GitHub to encourage user contributions
If you have a working version of Python 2 or 3 on your system
(we recommend Anaconda Python),
you can simply install the latest stable release of PyKE using pip
:
$ pip install pyketools
With PyKE installed, you can directly visualize frames from a target pixel file. For example, let's visualize the pixels of Kepler target KIC008462852 (a.k.a. Tabby's Star):
$ kepmask kplr008462852-2013098041711_lpd-targ.fits.gz --maskfile mask.txt
kepmask
is an interactive tool used to create a custom
aperture mask which can subsequently be used in other PyKE tasks.
For example, we can now use the kepextract
task to perform aperture photometry using the pixels defined using kepmask
above:
$ kepextract kplr008462852-2013098041711_lpd-targ.fits.gz --outfile lightcurve.fits --maskfile mask.txt
This creates a file called lightcurve.fits
which contains a lightcurve in a format similar to those found in the official archive.
To visualize the resulting light curve, we can use kepdraw
:
$ kepdraw lightcurve.fits
Users are welcome to open issues or pull requests. You can also contact the development team via keplergo@mail.arc.nasa.gov
If you find this code useful in your research, please cite both (Vinícius et al. 2017) and (Still & Barclay, 2012) using the BibTeX provided below. Also, please give us a GitHub star!
@misc{pyke3, author = {Zé Vinícius and Geert Barentsen and Michael Gully-Santiago and Ann Marie Cody and Christina Hedges and Martin Still and Tom Barclay}, title = {KeplerGO/PyKE}, month = jul, year = 2017, doi = {10.5281/zenodo.835583}, url = {https://doi.org/10.5281/zenodo.835583} } @misc{2012ascl.soft08004S, author = {{Still}, M. and {Barclay}, T.}, title = "{PyKE: Reduction and analysis of Kepler Simple Aperture Photometry data}", keywords = {Software}, howpublished = {Astrophysics Source Code Library}, year = 2012, month = aug, archivePrefix= "ascl", eprint = {1208.004}, adsurl = {http://adsabs.harvard.edu/abs/2012ascl.soft08004S} }