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1.7.1 (unreleased)

1.7.0 (2026-03-06)

  • Flux conversions to and from VEGAMAG now use the default Vega spectrum (synphot.spectrum.Vega) if no valid Vega spectrum is given, instead of throwing an exception. To that end, a new synphot.spectrum.lazy_load_vega() function is also introduced. [#435]

1.6.1 (2025-12-10)

  • Added wheels for Python 3.14. [#426]

1.6.0 (2025-06-26)

  • Compatibility with astropy 7.1. [#403]
  • Compatibility with specutils 2.0 (optional dependency). Bumped minversion of specutils to 1.10. [#413]
  • Removed synphot.test() test runner. Use pytest --pyargs synphot instead. [#408]
  • Added wheels for musllinux and OSX x86 architectures. [#409]

1.5.0 (2024-11-19)

  • Default Vega is now alpha_lyr_stis_011.fits. [#400]

1.4.0 (2024-04-11)

  • read_fits_spec() now uses astropy.table.QTable.read for parsing to ensure that the correct TUNITn is read. As a result, wave_unit and flux_unit keywords are deprecated and no longer used in that function. Additionally, if any TUNITn in the table is invalid, regardless whether the column is used or not, an exception will now be raised. [#384]
  • read_spec() now detects whether given filename is FITS more consistently w.r.t. astropy. [#384]
  • Compatibility with numpy 2.0 and astropy 6.1 by building C-extension against numpy 2.x ABI. [#387]
  • Bumped minimum supported versions for Python to 3.10, numpy to 1.23, astropy to 6.0, and scipy to 1.9. [#387]

1.3.0 (2023-11-28)

  • Compatibility with numpy 2.0. [#363]
  • Bumped minimum supported versions for Python to 3.9, numpy to 1.20, astropy to 5.0, and scipy to 1.6. [#363]
  • Wheels for Python 3.12.

1.2.1 (2023-06-01)

  • Compatibility with numpy 1.25. [#356]

1.2.0 (2023-03-20)

  • New filter_parameterization subpackage to handle filter parameterization, adapted from tynt package written by Brett Morris. [#257]
  • OBMAG and VEGAMAG are no longer interchangeable. [#331]
  • Box1D model now takes optional step input to allow user control over the generated sampleset. Default behavior maintains backwards compatibility. [#342]
  • Dropped support for Python 3.6 and 3.7. Minimum supported Python version is now 3.8. [#330]
  • Bumped minimum supported versions for numpy to 1.18, astropy to 4.3, and scipy to 1.3. [#341]
  • Added wheel for OSX ARM64 architecture. [#352]

1.1.1 (2021-11-18)

  • Compatibility with astropy 5.0. [#321]

1.1.0 (2021-06-23)

  • synphot.synphot_utils C-extension is no longer optional. Your installation will fail if it cannot build. [#297]
  • ~/.astropy/config/synphot.cfg is no longer updated on import. [#307]
  • Compatibility with numpy 1.20 and astropy 4.3. [#301, #309, #311]

1.0.1 (2020-08-03)

  • Fix for conda build. Does not affect functionalities. [#279]

1.0.0 (2020-07-31)

  • Default Vega is now alpha_lyr_stis_010.fits. [#266]
  • CDBS is now TRDS. [#278]

0.3.0 (2020-03-17)

  • SourceSpectrum and SpectralElement now have to_spectrum1d and from_spectrum1d to write to and read from specutils.Spectrum1D object, respectively. [#243]
  • Observation now accepts specutils.Spectrum1D as a valid source spectrum input. [#246]
  • Dropped support for Python 3.5 and astropy 2.x. This version is only compatible with Python 3.6 or later and astropy 3.x or later. [#243]
  • Added support for RickerWavelet1D model that is the renamed version of MexicanHat1D model to be consistent with astropy 4.0. [#250]
  • Added support for extinction curve from dust-extinction. [#251]
  • Added option for synphot.utils.download_data() to download to the cache instead of a specific location. Please note that new option is not fully compatible with customization using synphot.cfg. [#211]
  • Added option to use analytic integral for some models. However, for backward compatibility, the default is still trapezoid integration. [#252]
  • Trapezoid integration now provides unsigned area for RickerWavelet1D. [#252]

0.2.1 (2019-12-20)

  • effstim now raises SynphotError properly when Vega spectrum is not given for VEGAMAG calculation. [#228]
  • Infrastructure update in accordance to Astropy APE 17. [#229, #233]

0.2.0 (2019-11-19)

  • Use updated Vega spectrum for VEGAMAG. [#222]
  • Compatibility with Numpy 1.17. [#212]
  • Compatibility with astropy 4.0 models. [#201]
  • Removed Python 2 support. This version is only compatible with Python 3.5 or later. [#185]

0.1.3 (2019-03-24)

  • Config to use HTTP instead of FTP. [#171]
  • New synphot.utils.download_data() function to help download data from STScI HTTP service. [#179]
  • Fixed scalar unit conversion for VEGAMAG. [#174]
  • Bug fix for effstim calculations in some flux units. [#159, #166]

0.1.2 (2018-07-19)

Bug fix for GaussianFlux1D total_flux unit handling. [#154]

0.1.1 (2018-06-05)

Bug fix for integrated unit. [#151]

0.1.0 (2018-01-19)

First release.