New HATS Catalogs, High Energy Analysis Support, and Notebook Tutorials

Announcements
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Announcing HATS data products for DELVE, SDSS, DES, DESI, and ZTF; analysis tools on Fornax for high energy spectra, images, and tables; SPHEREx Mosaic tool + tutorial and SPLICES catalog; and OpenUniverse2024 data access and analysis tutorials!

HATS Catalogs

MAST and IRSA have released several HATS catalog data products. HATS is a Parquet-based format that enables scalable, cloud-based analysis of large astronomical catalogs. Tutorials are available at LSDB Tutorials. The datasets are available in AWS S3 cloud storage buckets (access is free!).

Fornax Software Environments Updated to 20.0520

The updates include:

  • Several bug fixes, including a fix to the Keep-alive feature.
  • Added xspec-extension to support xspec plotting (see below).
  • Added a beta version of FViewer, the FITS image and table viewer (see below).

Additional Support for Xspec Plotting

Xspec is a powerful spectral analysis tool for high energy spectra. We have recently added support for xspec plotting when running xspec in a terminal inside JupyterLab. To use the new feature:

  • Open xspec in the terminal.
  • Click View → Activate Command Palette (or Cmd/Ctrl + Shift + C).
  • Type xspec to filter for ‘Open Xspec Viewer’.
  • Follow the instructions in the widget.

These steps are illustrated here:

xspec-extension-3

FViewer: A New FITS Image and Table Viewer

FViewer is a new tool being developed by HEASARC that is planned to replace the classical fv, with broader image support (similar to ds9). It is currently available in Fornax under the ‘Others’ menu for testing. Please send comments, questions, or suggestions to the helpdesk.

fviewer-screenshot
fviewer-screenshot1920×1018 508 KB

SPHEREx

SPHEREx Mosaic Tool and Tutorial

The SPHEREx Mosaic Tool was released by IRSA. The tool creates spectral cubes from SPHEREx Spectral Images based on user-specified mosaic geometry, pixel scale, and wavelength range. The output cube can include up to 102 wavelength planes corresponding to the standard SPHEREx channels. It can be explored with IRSA visualization tools or downloaded for offline analysis. The notebook Understanding and Analyzing SPHEREx Mosaic Cubes demonstrates how to work with the output in Python.

SPLICES Catalog

The SPHEREx List of Ice Sources (SPLICES) is now available in IRSA’s Catalog Search tool.

OpenUniverse2024 Tutorials

IRSA has released three Python tutorials that demonstrate how to work with OpenUniverse2024 data. The data comprise 400 TB of simulated imaging and catalogs representing ~70 deg² of matched optical/infrared imagery for both the Rubin Observatory’s LSST wide-fast-deep survey and the Nancy Grace Roman Space Telescope’s high-latitude survey.