Data Tools

Data Cycle System (DCS)
SOFIA proposals and observation data are managed by the SOFIA Data Cycle System (DCS). The DCS is designed primarily to support Science and Mission Operations activities associated with Guest Observer (GO) programs for the observatory. Among other resources provided by the DCS are USPOT and SOFIA's Science Archive.
Unified SOFIA Proposal Tool (USPOT)
USPOT is the program researchers must use to submit proposals with the SOFIA Science Center.
SOFIA Science Archive
Archival science data for SOFIA can be accessed through the DCS Science Archive. A transition has begun to use IRSA as SOFIA's primary data archive; read more about the data migration to IRSA here.

SOFIA Instrument Time Estimator (SITE)
SITE is an instrument-specific exposure time calculator that provides the total integration time or S/N for a given instrument, filter(s), source type (point, extended, emission line), and water vapor overburden. 

Atmospheric Transmission (ATRAN)
The atmospheric transmission as a function of wavelength may be obtained using the on-line Atmospheric Transmission tool (ATRAN), developed and provided to the SOFIA program by Steve Lord. The use of ATRAN is necessary for planning SOFIA high-resolution spectroscopic observations. For a specified observing altitude and wavelength range, ATRAN will generate a downloadable output file and plot of the atmospheric transmission as a function of wavelength.

SOFIA SPectral EXplorer (SOSPEX)
The SOSPEX tool, written by Dario Fadda and Ed Chambers, allows users to explore the final data cubes produced by the data reduction pipeline. An overview of its use can be found on the SOSPEX poster from the AAS. (See also

The FLUXER tool, written by Christof Iserlohe, allows users to fit the continuum and estimate line strengths in the final FIFI-LS data cubes.

Target Visibility Tool
The downloadable Target Visibility Tool (VT)—which is also now an integrated feature of USPOT—provides the capability to estimate what date, time, and aircraft heading are required to observe an astronomical target. A target is visible to SOFIA if the elevation is in the range 20° to 60°. For flights that take off from and return to Palmdale, the southernmost allowed declination is -36°. Southern targets will be scheduled for observation during the Southern Hemisphere Deployment that will take place during the southern winter of 2019. Proposers may use VT to check the periods of visibility for their targets, however, the use of VT is not a requirement because detailed flight planning is done by the SMO staff.

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