Suggest a science breakout session for the Rubin PCW 2022

Archive PCW 2022
#22

Hello everyone, I’m the junior member of the SOC this year, and I would like to propose a break-out session focused on Early Career Astronomers in a Post-Covid academic world. We could invite a few people from within the collaboration to talk about how the impact has been both in terms of science collaborations and job searches, especially people who have transitioned from grad school to post doctoral positions in the last two years. We could also compare how it has impacted participation to the PCW over the last couple of years. If anyone has any comments or suggestions, or ideas that they would like to be incorporated into this, or even things that they might have seen at similar sessions it would be great to add those in as well.

I don’t have anyone in mind at the moment who could be a chair for this session, but I’d be super grateful if someone would like to volunteer for that.

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#23

Hi All,

I would like to propose a session on using simulations for commissioning the optical system.

In the upcoming version of imSim (the program used to generate the images in DC2) we will be incorporating the Batoid optical ray tracer. This allows us to change the optical configuration of the instrument and study the PSF when the beam is defocused etc.

During commissioning there are now and will be many tests with the ComCam, LSSTCam and at the AuxTel including the use of various calibration instruments. We also need to to test our software control systems that measure out intra and extra-focal donuts and bring the system into focus by applying the necessary feedback to the mirror systems etc.

I would like to arrange a discussion between imSim developers and people doing and designing the commissioning tests both to show our current status and to better understand what control interfaces are needed for the simulation software. Also we would like to discuss and design which tests would be most useful and which instruments are most important for us to be able to simulate for commissioning.

All of this work will eventually also be useful during operations and the session will bring together both project members and science collaboration members doing imSim development or who are interested in more complex simulation use cases.

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#24

Background: LSST will detect a multitude of galaxies out to 26th magnitude and beyond, producing unprecedentedly dense sky images for a survey of this type. To take complete advantage of the LSST dataset we must be able to robustly infer single-galaxy properties from image regions in which multiple galaxies appear to significantly overlap. This introduces a challenging source of systematic uncertainty that affects object detection, shape measurements, photometric redshift estimates, and ultimately inference methods for cosmological parameters, such as dark energy, that depend on a maximally large sample of well-measured galaxies. This challenge has motivated many of us to study the impact of blending on particular science cases, and to test out new approaches to galaxy detection, deblending, and deblended measurements.

The DESC Blending Working Group would like to propose a session discussing the nature and impact of galaxy blending and how we can address it, particularly from the perspective of dark energy science. It would be helpful to include a review of Project plans for detection and Scarlet deblending in the Data Releases, along with tools and use cases for Synthetic Source Injection. It would also be good to hear any concrete plans from the wider community for implementing alternative deblending methods and for sharing the resulting data products. A lot of very compelling work has recently been done and is currently in progress on everything noted above and more, and we’d love to give people a chance to share their work with the wider community.

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#25

Bootstrapping Photometric Calibration

For the first Data Release, we have plans for self-calibration of photometric data of the LSST. In subsequent years, we can use the outputs from previous years for sufficiently precise photometric calibration in native LSST bands as the data are taken. Prior to full processing for a Data Release, we need to produce photometric calibrations for images as they are taken during commissioning and during the first year. This is the “bootstrap problem”, and is analogous to the problem of producing templates for first-year LSST imaging.
This breakout session will discuss plans for real-time photometric calibration during the bootstrap phase. It will include discussion of precision requirements for bootstrapped calibrations, and for requirements for reference catalog wavelength and spatial coverage and color transformations. We will also discuss how to use additional external inputs such as AuxTel spectroscopy.

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#26

I would like to suggest a session, which I am happy to chair, on source injection. An introduction to the new tasks for gen 3, some discussion about what we can do with it, how it helps with V&V and requests/discussion from users for/about future plans.

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#27

Hello! the Science Collaborations have just instantiated a Diversity Equity and Inclusion Council. This Council will serve as a coordination point for the DEI initiatives that each SC engages in. We would like to introduce ourselves to the Rubin community and this inspired a session for the PCW
to bring together teams and committess working on Diversity Equity and Inclusion (DEI) related initiatives, to increase their visibility in the Rubin community, get to know each other and discuss common elements, goals, and the potential for growing thorugh interconnections

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#28

DESC Observing Strategy Working Group (OSWG) would very much like to see a focused session on DESI overlap as DESI spectra are going to be critical for our science. It may also be helpful to have a session on rolling cadences depending on whether the sims team thinks there’s been enough progress since the last update and whether there are any open questions they’d like us to answer; this could be an independent session or a part of a SCOC-driven overall survey strategy session (where it’d also be helpful to learn what questions SCOC is thinking about).

We also support the proposal sessions posted above for commissioning, blending, photometric calibration, and satellite constellations, as well as the DEI one and the ECS one.

(on behalf of the DESC OSWG co-conveners, Humna and Saurabh)

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#29

Hi everyone,

Many, many thanks for all your suggestions and comments. We’ve had a lot of great science breakout sessions come together over the past few weeks – extra big thanks to everyone who has volunteered to be a session chair!

Below is the list of the suggestions, about in the order they were suggested in the thread above, along with the corresponding planned PCW breakout session, which links to that session’s webpage (if it exists yet) where you can see the title, abstract, and chair name.

This list does not contain all of the sessions that will be of interest to the science community! It is only the topics that were suggested in this thread. You will find many more breakout session topics under the “Proposed Sessions” tab of the PCW website. The workshop agenda will be posted soon, in which you will be able to see all the sessions at a glance.

follow-up telescope facilities – Follow-Up Facilities for Time-Domain Astronomy

multi-messenger astrophysics – Multi-Messenger Astronomy with Rubin Observatory

connecting the community with RSP developers – Coffee with the Rubin Science Platform Developers

alert brokers – it turns out that most of the alert broker teams are unavailable during the PCW, but a fully virtual brokers tag-up might be organized in the near future. broker teams also recently met up in a series of fully virtual workshops, the materials from which are all available online: LSSTC Enabling Science Broker Workshop 2020 and 2021

IDACs – Connecting the Community to IDAC and SPC Resources

survey strategy – there will be at least one, and probably two survey strategy sessions

difference image analysis – Difference Image Analysis

ELAsTiCC challenge – The Extended LSST Astronomical Time-Series Classification Challenge (ELAsTiCC)

DESI – The Dark Energy Spectroscopic Instrument (DESI): LSST Synergies

From Data to Software to Science (LINCC) – From Data to Software to Science

satellite constellations – Satellite Constellations

in-kind contributions – The Rubin In-kind Program Community Session

science verification and validation – there will be a session covering topics related to science verification and validation planning and tools, exact title and abstract TBD

commissioning survey strategy notes – it is currently anticipated that commissioning-era survey strategy will be covered during the session Early Science with Rubin

early careers – there will be a session on early careers, title and abstract TBD

simulations with imSim – Simulating the Rubin Optical System with imSim

deblending – Deblending: Plans and Challenges

photometric calibrations – Bootstrapping Photometric Calibration

source injection – Source Injection in the Rubin Pipelines

diversity, equity, and inclusion – Rubin-related Initiatives Toward Diversity, Equity, and Inclusion

#30

Please, what is ECS?