Skip to main content

Exposure time calculator for APO/ARCES

Project description

Exposure time calculator for APO/ARCES

Testing status Documentation Status Latest release Powered by Astropy Badge http://joss.theoj.org/papers/10.21105/joss.01130/status.svg https://zenodo.org/badge/160124540.svg

Calculate S/N and exposure times for stellar spectroscopy with the ARC Echelle Spectrograph (ARCES) on the ARC 3.5 m Telescope at Apache Point Observatory.

The ARC Echelle Spectroscopic (ARCES) Exposure Time Calculator, or arcesetc, is a simple exposure time calculator for the ARCES instrument on the Astrophysical Research Consortium (ARC) 3.5 m Telescope at Apache Point Observatory for stellar spectroscopy. Users can supply arcesetc functions with the spectral type of their target star, the V band magnitude, and either: the desired exposure time in order to determine the counts and signal-to-noise ratio as a function of wavelength; or the desired signal-to-noise ratio at a given wavelength to determine the required exposure time.

We estimate the count rates for stars as a function of wavelength by fitting 15th-order polynomials to each spectral order of real observations of a star of each spectral type. These polynomial coefficients and some wavelength metadata are stored in an HDF5 archive for compactness and easy of reconstruction. Then upon calling arcesetc, the archive is opened and the spectral order closest to the wavelength of interest is reconstructed from the polynomial coefficients, for a star of the closest available spectral type to the one requested.

Installation

You can install arcesetc with pip:

pip install arcesetc

You can install arcesetc from the source code by doing the following:

git clone https://github.com/bmorris3/arcesetc.git
cd arcesetc
pip install .

arcesetc requires python >=3.5, numpy, astropy, h5py, and matplotlib.

For more information, read the docs.

License

This project is Copyright (c) Brett Morris & Trevor Dorn-Wallenstein and licensed under the terms of the MIT license. This package is based upon the Astropy package template which is licensed under the BSD 3-clause licence. See the licenses folder for more information.

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

arcesetc-0.3.2.tar.gz (3.0 MB view details)

Uploaded Source

File details

Details for the file arcesetc-0.3.2.tar.gz.

File metadata

  • Download URL: arcesetc-0.3.2.tar.gz
  • Upload date:
  • Size: 3.0 MB
  • Tags: Source
  • Uploaded using Trusted Publishing? No
  • Uploaded via: twine/4.0.2 CPython/3.11.3

File hashes

Hashes for arcesetc-0.3.2.tar.gz
Algorithm Hash digest
SHA256 fc817b4f3f0df763e323a983b6766631ead72fee0953a0d5df76673d936df91d
MD5 282283bbd98d9207990289ae39bdf33b
BLAKE2b-256 58394df3c807f1e1e8ed8a412e202684ae5d584aa900694e31fe4bccd8e86e61

See more details on using hashes here.

Supported by

AWS AWS Cloud computing and Security Sponsor Datadog Datadog Monitoring Fastly Fastly CDN Google Google Download Analytics Microsoft Microsoft PSF Sponsor Pingdom Pingdom Monitoring Sentry Sentry Error logging StatusPage StatusPage Status page