Chris Walter

Properly account for focal plane sensor height variations.

2

At the PCW, @jmeyers314 tagged non-uniformities in focal plane height as one of the image quality drivers we are not currently simulating. In the AOS group, this has also been...

Make a PSF object type which is a call to a PIFF object

4

Especially for things like SSI, it would be good to be able simulate a PSF based on an the real PSF in an image at an arbitrary location. @rmjarvis suggests...

Add skyCatalog test for object position test.

1

Mike notes that currently, test_object_positions.py only is testing that things work with instance catalogs and that we should add tests for the skyCatalog case too. Currently, he notes we are...

Integrate Batoid for optical raytracing

7

This issue tracks the integration of @jmeyers314 's Batoid raytracing code with imsim. Here we list important effects that we should be able to now implement. - [x] Vignetting -...

Request switch to Earth based coordinate system for lensing conventions.

23

@rmjarvis' comment today > One of my pet peeves is when people display anything about the night sky putting North up and East right. Which corresponds to the view from...

Synthesize sensor defects from I&T data and create associated masks for DM.

5

Recording a conversation from: https://lsstc.slack.com/archives/C2PNKDK97/p1548357269100100 We need to make masks based on hot pixels and columns etc in the I&T data to pass to DM. So as not to confuse...

Correctly apply relevant effects to specific sensor types

2

With the use of the new DM camera model we know correctly know which sensors are E2V and which are ITL. Currently some sensor effects (e.g.) tree rings are uniform...

Add surface effects like Annealing/Bamboo Patterns as GalSim surface operations

13

We should implement fringing. Some formalism and a standalone simulation are [here](https://confluence.slac.stanford.edu/pages/viewpage.action?pageId=215845587). The place to put this into the sensor model now exists in the GalSim API as part of...

Incorporate the work implementing fringing described in: https://ui.adsabs.harvard.edu/abs/2023PASP..135c4503G/abstract into imSim. This is linked to PR #356. We also need sky spatial variability data from @RobertLuptonTheGood to complete this work. Robert...

Add an option for a new flexible binary instance catalog

9

One of the initial driving development philosophies for imSim was to make it a drop in for PhoSim which could read the same instance files. This was very successful for...