WFC3/UVIS G280 Calibration and Reference Files
If you are using slitlessutils for G280 grism reduction and analysis, all the necessary calibration and reference files are accessible from the software directly. See the configuration documentation for slitlessutils and/or the grism data analysis webpage.
The configuration files presented on this page are in the correct format to be used with the HSTaXe extraction software, which is no longer a STScI-supported package.
To use these deprecated calibration products with HSTaXe, copy them into a directory and set your AXE_CONFIG_PATH environment variable to point to that directory. The configuration files (v.2.5) with wavelength and trace calibration information were created using in-flight calibration data with details given in WFC3 ISR 2017-20. The sensitivity files were generated by the calibration presented in WFC3 ISR 2020-09. The older versions of the reference files, also provided here, were created using ground calibration data (WFC3 ISR 2009-01).
Callout
Note: V2.5 of the configuration files present the +1 and -1 orders in both CHIP1 and CHIP2 which are fully calibrated over the entire field of view. Wavelength and trace calibration for the zeroth and higher orders are provided in WFC3.UVIS.G280.CHIP1.V3.0.conf and WFC3.UVIS.G280.CHIP2.V3.0.conf but these files are not compatible with HSTaXe at present. Please stay tuned for updates regarding these files.
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Download All Files
Current
Includes calibration updates from 2021.
Old
Includes previous versions of calibration files.
Individual Files
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Description Download link Cube for Chip 1 WFC3.UVIS.G280.CHIP1.V2.5.conf Cube for Chip 2
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Chip 1
Description Download link 0th Order WFC3.UVIS.G280.CCD1.0.sens.2021.fits +1st Order
-1st Order +2nd Order -2nd Order +3rd Order -3rd Order +4th Order -4th Order Chip 2
Description Download link 0th Order +1st Order
-1st Order +2nd Order -2nd Order +3rd Order -3rd Order +4th Order -4th Order -
Description Download link Cube for Chip 1 Cube for Chip 2
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For more information on the grism sky subtraction, see the UVIS grism sky page.
Calibration History
- ISR 2009-01 : "The ground calibrations of the WFC3/UVIS G280 grism"
- ISR 2017-20 : "Trace and Wavelength Calibrations of the UVIS G280 +1/-1 Grism Orders"
- ISR 2020-09 : "Updated Calibration of the UVIS G280 Grism"
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ISR 2023-06 : "The WFC3/UVIS G280 Grism Sky"
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