nvieira-mcgill / alala

Image stacking, astrometry, and photometry for MegaCam/WIRCam on the Canada-France-Hawaii Telescope

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alala

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Documentation Status

A pipeline for the MegaCam (a.k.a. MegaPrime) and Wide-field Infra-Red Camera (WIRCam) instruments of the Canada-France-Hawaii Telescope (CFHT). Includes the following:

  • Stacking (co-addition) of individual exposures
  • Obtaining astrometric solutions
  • Point-Spread Function (PSF) photometry
  • Aperture photometry
  • Putting PSF/aperture photometry together to produce light curves

The code is named after the ʻalalā, the Hawaiian crow.

Documentation

Detailed documentation (WIP) for all modules can be found [here](https://alala.readthedocs.io/en/latest/). In the future, example scripts/notebooks will be added.

Installation

Currently, needs to be installed directly from github. May be install-able with conda and/or pip in the future.

The code will be migrated from iraf to some other software (e.g. swarp) in the future.

Dependencies:

Non-Python:

  • astrometry.net (can however be ignored in favour of source detection with the image segmentation methods of photutils instead)
  • iraf (only for stacking)

Contact

nicholas.vieira@mail.mcgill.ca

Acknowledgements

This project was begun in May 2019 by Nicholas Vieira, working under the supervision of Dr. Daryl Haggard and Dr. John Ruan at the McGill Space Institute. Thanks go to Dr. Daryl Haggard, Dr. John Ruan, and the rest of the Haggard research group. We are very grateful for assistance from Dr. Laurie Rousseau-Nepton, instrument specialist for WIRCam, and Dr. Dustin Lang for his assistance with astrometry.net.

Credits

Free software: MIT license

This package was created with Cookiecutter and the audreyr/cookiecutter-pypackage project template.

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Image stacking, astrometry, and photometry for MegaCam/WIRCam on the Canada-France-Hawaii Telescope

License:MIT License


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