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** GALEX Evolution Explorer: Status, Deliveries, and Future Prospects**

Get insights into the complex 2012 status of NASA's Galaxy Evolution Explorer satellite. Learn about completed missions, pending catalog deliveries, unresolved questions, and the creation of Photon List files. Stay updated on the satellite's evolution and data conversions.

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** GALEX Evolution Explorer: Status, Deliveries, and Future Prospects**

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  1. Galaxy Evolution Explorer MAST/GALEX Team: • (Tony Rogers) • Chase Million* • Bernie Shiao • Myron Smith • Shui-Ay Tseng Rose Bowl Parade

  2. GALEX’s complicated status in 2012 • May 2012: NASA “lent” CalTech the satellite. • Completed mission by low-voltage obser- vations of bright sky regions (Mag. Clouds, Galactic bulge, additional Kepler fields, etc.) • October: GALEX observations began in “scan” mode, funded by consortium (Caltech, Orbital Sci. Corp., a few universities) through 2012. • MAST poised to copy over documentation site.

  3. GALEX Deliveries in 2012 • Last of GI deliveries. • All GR7 imaging and GR7 deliveries for post-Jan. 2011, including redeliveries of cross-mission imaging and GR6 grism spectra data. • “GCAT” catalog (MSC, ASC, i.e. medium & all-sky) deliveries are pending. These 2 catalogs will provide unique identifiers and fluxes for nearly all GALEX sources at NUV-source positions.

  4. Unresolved questions • Will ops. continue past December? – dunno. • What is the path of delivering post-NASA phase data? - unknown, but it will be found (…when?).

  5. Creation of Photon List files (x,y,t storage of all photons) • Requires extensive processing for conversion: “raw6” (large) photon list files • Caltech delivered raw6 files; MAST stored them (20 TB). • Procedure to rewrite part of pipeline code in local area (C. Million). Bernie uses a small cloud of 5 MAST computers to convert the raw6. • Results to be stored in a MAST database (~80-100 TB) for preprocessed light curves (and image movies) or customized extractions at 1 second cadence.

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