The Hubble Advanced Spectral Product (HASP) Program

The Hubble Advanced Spectral Products (HASP) program is designed to robustly coadd Cosmic Origins Spectrograph (COS) and Space Telescope Imaging Spectrograph (STIS) spectra within the Mikulski Archive for Space Telescopes (MAST) in an automated fashion such that coadds are available for new data or archival data with updated calibrations.

For each target within a visit or program, HASP employs a meticulous multi-stage filtering process to ensure data quality and creates coadded products for all central wavelengths (CENWAVEs) within specific gratings, as well as combined products using different gratings and instruments. The project also emphasizes making the code accessible to the user community for custom coaddition.

As calibrations improve and new data are added to the archive, HASP products are re-created automatically so that they represent the best reduction of a given visit or program. Automated coadditions like those achieved by HASP can significantly enhance the combination of different CENWAVES, increase signal-to-noise ratios, and increase wavelength coverage.

These properties make HASP a vital resource for astronomers using archival spectroscopic data from HST.

John Debes, Ravi Sankrit, Travis Fischer, Elaine Frazer, Alec Hirschauer, Kate Rowlands, Matthew Burger, Robert Swaters, Robert Jedrzejewski, Sierra Gomez, Leonardo Dos Santos, Svea Hernandez, Lauren Miller, Anna Payne, Marc Rafelski, Thomas Wevers, Sara Anderson, Tom Bair, Kathryn Bello, Joleen Carlberg, Brian Charlow, Andrew Cortese, Nadia Dencheva, Tracy Ellis, Ben Falk, Scott Fleming, Peter Forshay, Syed Gilani, Patty Hall, Tim Kimball, Talya Kelley, Richard Kidwell, Jenn Kotler, Aiden Kovacs, Bethan James, Christopher Rahmani, David Rodriguez, Julia Roman-Duval, David Soderblom, Lisa Sherbert, Dan Welty, David Wolfe

Comments: 30 pages, 8 figures
Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM)
Report number: Instrument Science Report COS 2024-01
Cite as: arXiv:2605.06836 [astro-ph.IM] (or arXiv:2605.06836v1 [astro-ph.IM] for this version)
https://doi.org/10.48550/arXiv.2605.06836
Focus to learn more
Submission history
From: Ravi Sankrit
[v1] Thu, 7 May 2026 18:43:38 UTC (2,140 KB)
https://arxiv.org/abs/2605.06836

Astrobiology, Astronomy,