Merge pull request #518 from mperrin/relnotes_for_1.0.0

last additional release notes update for 1.0.0
spacetelescope · Dec 10, 2021 · 88d2915 · 88d2915
2 parents be0a5df + 328588b
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diff --git a/docs/jwst.rst b/docs/jwst.rst
@@ -58,6 +58,7 @@ JWST Optical Budgets
 The total system performance for JWST is tracked in optical budgets for OTE and SI WFE. WebbPSF includes representations of many of these component terms.
 These can be visualized as plots of OPDs. See :doc:`jwst_optical_budgets`.
 
+.. _jwst_ote_details:
 
 Optical Telescope Element (OTE)
 ===============================

diff --git a/docs/relnotes.rst b/docs/relnotes.rst
@@ -35,11 +35,9 @@ For JWST, this release includes updates to WebbPSF just prior to the launch. For
 
 **James Webb Space Telescope OTE model improvements**:
 
-* Updates in sign conventions for representing WFE, for strict consistency with the JWST WSS and other tools. Much of this was implemented by upstream changes in ``poppy``;
-  see `this page in the poppy docs <https://poppy-optics.readthedocs.io/en/latest/sign_conventions_for_coordinates_and_phase.html>`_ for details.  (:pr:`397`, :pr:`419` by :user:`mperrin`, :pr:`418` by :user:`Skyhawk172`)
-* Add models of OTE field dependence from the nominal OTE design and as-built optics (:pr:`389` by :user:`grbrady`, :pr:`505` by :user:`mperrin`) and from
-  any misalignment of the secondary mirror, such as would be measured and corrected in MIMF (:pr:`392` by :user:`Skyhawk172`). These
-  additions were enabled by more consistent use of JWST Linear Optical Model framework behind the scenes (:pr:`378` by :user:`mperrin`).
+* Updates in sign conventions for representing WFE, for strict consistency with the JWST WSS and other tools. Much of this was implemented by upstream changes in ``poppy``; see `this page in the poppy docs <https://poppy-optics.readthedocs.io/en/latest/sign_conventions_for_coordinates_and_phase.html>`_ for details.  (:pr:`397`, :pr:`419` by :user:`mperrin`, :pr:`418` by :user:`Skyhawk172`)
+* Significant update to JWST OTE optical models, to reflect more recent 2020 optical modeling of the as-built observatory (the "PSR2020" integrated modeling cycle). These have noticably lower WFE than the prior models (which were intentionally conservative, but ended up being more conservative than intended); typically the WFE is lower by some tens of nanometers in the new "prelaunch_predicted" OPDs. See details in :ref:`jwst_ote_details`. We will all learn together in 2022 how well these models predict the observatory's performance in flight. (:pr:`512`, :user:`mperrin`).
+* Add models of OTE field dependence from the nominal OTE design and as-built optics (:pr:`389` by :user:`grbrady`, :pr:`505` by :user:`mperrin`) and from any misalignment of the secondary mirror, such as would be measured and corrected in MIMF (:pr:`392` by :user:`Skyhawk172`). These additions were enabled by more consistent use of JWST Linear Optical Model framework behind the scenes (:pr:`378` by :user:`mperrin`). This model of field dependence plus the updated OTE OPD files should yield a more comprehensive and precise model of PSF variations across the observatory.
 * Add an option to use a lookup table of field dependent OPDs from Ball's ITM tool (for JWST team internal use in
   pre-launch wavefront team practices and rehearsals). (:pr:`425` by :user:`Skyhawk172`, :pr:`474` by :user:`mperrin`)
 * Update the JWST OTE Linear Model to allow more flexible pupil sampling, in particular using higher sampling to reduce Fourier aliasing in certain FGS calculations (:pr:`440` by :user:`kjbrooks`)