Left: ETC scene for mid-infrared calculations in the new Supernova 1987A Example Science Program. Center: ETC logo. Right: Properly-oriented PSF for the MIRI F1065C 4-Quadrant Phase Mask.
JANUARY 27, 2020

Accuracy Improvements and Bug Fixes Available in ETC 1.5.1

The JWST Exposure Time Calculator (ETC) version 1.5.1 is now live. This release contains late-breaking accuracy improvements, performance enhancements, and bug fixes, including:

  • Updating the cosmic ray model
  • Improving the mid-infrared thermal model
  • Fixing bugs for slit and slitless spectroscopy when the source is offset within the scene
  • Enhancing performance of the ETC during times of heavy use
  • Rotating PSFs to match the orientation on-sky
  • New and updated workbooks associated with the Example Science Programs in JDox
  • Addition of a narrow-band filter for NIRCam target acquisition (TA) to support observations of bright targets

See the release notes for details, and be sure to review the known issues for this release. Read the instructions for downloading the new version of the Pandeia engine and the associated data.

If you have any questions about this release, please let us know via the JWST Help Desk.

For technical assistance, please contact the JWST Help Desk.

The NASA James Webb Space Telescope, developed in partnership with ESA and CSA, is operated by AURA’s Space Telescope Science Institute.