diff --git a/SITCOMTN-149.tex b/SITCOMTN-149.tex index f47d042..763c478 100644 --- a/SITCOMTN-149.tex +++ b/SITCOMTN-149.tex @@ -2,8 +2,12 @@ \input{meta} % Package imports go here. +\usepackage{xspace} % Local commands go here. +\newcommand{\ComCam}{ComCam\xspace} +\setlength{\headheight}{62pt} % heed warnings that these values need adjusting +\addtolength{\topmargin}{-7pt} %If you want glossaries %\input{aglossary.tex} diff --git a/acronyms.tex b/acronyms.tex index b3178f0..4bf2e06 100644 --- a/acronyms.tex +++ b/acronyms.tex @@ -3,15 +3,20 @@ \textbf{Acronym} & \textbf{Description} \\\hline 2D & Two-dimensional \\\hline +3D & Three-dimensional \\\hline ADU & Analogue-to-Digital Unit \\\hline +AI & Artificial Intelligence \\\hline AOS & Active Optics System \\\hline CBP & Collimated Beam Projector \\\hline +CCD & Charge-Coupled Device \\\hline CNN & Convolutional Neural Network \\\hline COSMOS & Cosmic Evolution Survey \\\hline DC2 & Data Challenge 2 (DESC) \\\hline +DE & dark energy \\\hline DECaLS & The Dark Energy Camera Legacy Survey \\\hline DECam & Dark Energy Camera \\\hline DES & Dark Energy Survey \\\hline +DESC & Dark Energy Science Collaboration \\\hline DIA & Difference Image Analysis \\\hline DIMM & Differential Image Motion Monitor \\\hline DM & Data Management \\\hline @@ -20,8 +25,11 @@ DRP & Data Release Production \\\hline EDFS & Euclid Deep Field South \\\hline FGCM & Forward Global Calibration Model \\\hline +FOV & field of view \\\hline +FRACAS & Failure Reporting Analysis and Corrective Action System \\\hline FWHM & Full Width at Half-Maximum \\\hline GBDES & Gary Bernstein Dark Energy Survey \\\hline +HIPS & Hierarchical Progressive Survey (IVOA standard) \\\hline HSC & Hyper Suprime-Cam \\\hline HST & Hubble Space Telescope \\\hline ISR & Instrument Signal Removal \\\hline @@ -31,6 +39,8 @@ LSB & Low Surface Brightness \\\hline LSST & Legacy Survey of Space and Time (formerly Large Synoptic Survey Telescope) \\\hline LUT & Look-Up Table \\\hline +LVV & LSST Verification and Validation \\\hline +M1M3 & Primary Mirror Tertiary Mirror \\\hline M2 & Secondary Mirror \\\hline ML & Machine Learning \\\hline MODTRAN & MODerate resolution TRANsmission model \\\hline @@ -44,10 +54,13 @@ SDSS & Sloan Digital Sky Survey \\\hline SE & System Engineering \\\hline SED & Spectral Energy Distribution \\\hline +SITCOM & System Integration, Test and Commissioning \\\hline +SLAC & SLAC National Accelerator Laboratory \\\hline SOAR & Southern Astrophysical Research Telescope \\\hline SSI & Synthetic Source Injection \\\hline SSP & Solar System Processing \\\hline TBC & To Be Confirmed \\\hline TMA & Telescope Mount Assembly \\\hline +UA & University of Arizona \\\hline ZTF & Zwicky Transient Facility \\\hline \end{longtable} diff --git a/crowded_stellar_fields.tex b/crowded_stellar_fields.tex index 6d8b0bc..97a23d9 100644 --- a/crowded_stellar_fields.tex +++ b/crowded_stellar_fields.tex @@ -1,2 +1,36 @@ \section{Crowded Stellar Fields} -\label{sec:crowded_stellar_fields} \ No newline at end of file +\label{sec:crowded_stellar_fields} + +\subsection{Observations taken to date} +Five visits of the globular cluster 47 Tuc were taken during AOS testing: +\begin{itemize} + \item \href{https://usdf-rsp.slac.stanford.edu/rubintv/summit-usdf/comcam/event?key=comcam/2024-11-16/focal_plane_mosaic/000136/comcam_focal_plane_mosaic_2024-11-16_000136.jpg}{2024111600136} + \item \href{https://usdf-rsp.slac.stanford.edu/rubintv/summit-usdf/comcam/event?key=comcam/2024-11-16/focal_plane_mosaic/000139/comcam_focal_plane_mosaic_2024-11-16_000139.jpg}{2024111600139} + \item \href{https://usdf-rsp.slac.stanford.edu/rubintv/summit-usdf/comcam/event?key=comcam/2024-11-16/focal_plane_mosaic/000142/comcam_focal_plane_mosaic_2024-11-16_000142.jpg}{2024111600142} + \item \href{https://usdf-rsp.slac.stanford.edu/rubintv/summit-usdf/comcam/event?key=comcam/2024-11-16/focal_plane_mosaic/000145/comcam_focal_plane_mosaic_2024-11-16_000145.jpg}{2024111600145} + \item \href{https://usdf-rsp.slac.stanford.edu/rubintv/summit-usdf/comcam/event?key=comcam/2024-11-16/focal_plane_mosaic/000148/comcam_focal_plane_mosaic_2024-11-16_000148.jpg}{2024111600148} +\end{itemize} +Links are to focal plane images of each visit. + +This field is a good target for testing the crowded field pipeline, though these observations do not have a sufficiently good PSF for analysis. Zoomed in, the PSF of the stars in the cluster are a variety of \href +{https://files.slack.com/files-pri/T02SVMGU4-F082HCQ499P/image.png}{out-of-focus donuts}. + +Deblending failed on these images, and we are waiting on new data under better conditions to test deblending and image differencing. + +Other fields observed so far have not exceeded \( 25\,000 \) sources per square degree, which is insufficient for testing the crowded field pipelines. + +\subsection{Commissioning data needed} +The ideal test data would be observations with densities in the \( 75\,000 - 100\,000 \) sources per square degree range. Several fields have been proposed: +\begin{enumerate} +\item \textbf{Extragalactic Deep Field:} Extended Chandra Deep Field-South @ (ra, dec) = (53.125, -28.1) +\item \textbf{Extragalactic Deep Field:} Euclid Deep Field South @ (ra, dec) = (59.1004, -48.73) +\item \textbf{Ecliptic Field:} Rubin\_SV\_38\_7 @ (ra, dec) = (37.9, 7.0) +\item \textbf{High Stellar Density:} Fornax Dwarf Spheroidal Galaxy @ (ra, dec) = (40.00, -34.45) +\item \textbf{High Stellar Density:} Rubin\_SV\_095\_-25 @ (ra, dec) = (95.0, -25.0) +\end{enumerate} + +\subsection{Development work needed} +While difference images can usually rely on having isolated diaSources, we expect to have many blended footprints in sufficiently crowded fields. + +We have implemented deblending of blends of purely positive or purely negative peaks (\href{https://rubinobs.atlassian.net/browse/DM-44319}{DM-44319}), but blends of mixed peaks require new development. +This work is ticketed on \href{https://rubinobs.atlassian.net/browse/DM-44416}{DM-44416}, but not yet started or planned.