v1.3.2

• Fixed the broken JupyterLab terminal on CANFAR
• Removed the even parameter in all scipy.integrate.simpson() calls, since this parameter is removed in the newest versions of scipy.

See the changelog for the full version history.

v1.3.1

• Added an _encircled_energies attribute to the Photometry object. This is needed for v1.1.1 of the ETC frontend (#26).

See the changelog for the full version history.

v1.3.0

• Changed MP and READ_NOISE parameters in parameters.py to 930 and 3.0, respectively. Also added some comments about parameters (#22)

Work by Dhananjhay Bansal:

• Introduced a new feature of Grism spectroscopy. This is very much still in development and currently only supports Sersic galaxy sources. Available results are: 2D dispersed spectrum and 1D SNR dispersed spectrum.
• Adapted transit numerical simulation from the POET mission. Using CASTOR tools, the light curve simulation calculation has been reduced from ~ 4 minutes to 1 second.
• Added a new feature that allows users to query GaiaDR2 database on the basis of (ra,dec), and threshold Gaia G magnitude, and select an appropriate normalized spectrum. This is achievable by selecting Gaia from the Predefined Spectra drop-down menu for a Point Source. To do transit simulation, one has to choose a Gaia Point Source.
• Added a new function show_slit_image in the uvmos_spectroscopy.py file to display a cropped view of the source on the detector.

v1.2.1

• Add ability to control the colour bar normalization when visualizing PSFs (#16)
• Update the bundled CASTOR PSFs (#17)

See the changelog for more details.

v1.2.0

• Changed AB magnitude calculation to interpolate the passband to the spectrum resolution (#7)
• Added PSF convolution to all sources using CASTOR PSFs (#11)
  • The fraction of flux enclosed within the aperture is estimated from the supersampled simulated images before binning down to the telescope's resolution. This works for any aperture with that is arbitrarily centred on the source. In this way, this change fixes the normalization limitation from v1.1.1, whose reference flux assumed galaxy sources were centred on and unrotated relative to the aperture
  • Now all photometry calculations use the fraction of flux enclosed within the aperture to calculate the electrons produced per second on the detector due to the source. Note that the reference flux, which determines what we consider to be 100% of the flux, is always based on the noiseless image, i.e., with no PSF convolution
    • An enclosed flux fraction of 100% corresponds to the magnitude of the source that the user set. So if the user normalizes a spectrum to, say, an AB magnitude of 25, then this AB magnitude will be the AB magnitude of the source if 100% of its flux was contained within the aperture. If the user selects an aperture that only contains 50% of the flux, however, the effective AB magnitude will be dimmer
  • The photometry ETC is now 100% pixel-based, even for point sources. Changing any pixel in the source_weights attribute, which gives the fraction of the total flux contained within the pixel, will change the photometry calculations

See the changelog for more details.

v1.1.1

• Jennifer Glover added UVMOS capabilities to ETC
• Tyrone Woods fixed a bug (noticed by Michael Balogh?) in photometry.py re: high Sérsic
  index galaxies

See the changelog for more details.

v1.0.0

Initial release of the castor_etc Python package.

See the changelog for more details.