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Ralph/LEISA PLUTOCRUISE PDS Review, January 2014

Ralph/LEISA PLUTOCRUISE PDS Review, January 2014. Jeff Morgenthaler Planetary Science Institute . Ralph Basics ralph_ssr.pdf ( REUTER ETAL2007 ). (SOC). Ralph/LEISA internals. Ralph on New Horizons payload_ssr.pdf (WEAVERETAL2007).

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Ralph/LEISA PLUTOCRUISE PDS Review, January 2014

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  1. Ralph/LEISA PLUTOCRUISEPDS Review, January 2014 Jeff Morgenthaler Planetary Science Institute

  2. Ralph Basicsralph_ssr.pdf (REUTERETAL2007) (SOC)

  3. Ralph/LEISA internals

  4. Ralph on New Horizonspayload_ssr.pdf (WEAVERETAL2007)

  5. Leisapushbroom spectrometrypayload_ssr.pdf (WEAVERETAL2007)

  6. LEISA detector • Note overlap in wavelength • Images get flip-flopped when stored

  7. Data directory structure • Example: 20100623_013964 • Intelligible date • First 6 of 10 digit MET (a little abstract, but OK) • 10 digit MET good for 317 years • File example: lsb_0139647719_0x53c_sci_2.fit Inst; full MET; ApID;eng=raw; sci=cal; SOC ver

  8. LEISA cube slice of Vega • Wavelength vertical • Sunlight leak • Lots of data taken to characterize sunlight leak

  9. Vega co-added data cube • Doesn’t look too useful • Doesn’t look like instrument artifacts are taken out of individual slices • This is not according to ICD specifications

  10. Rating of LEISA PLUTOCRUISE • Completeness • Stuff is there – aareadme.txt could be improved • Intelligibility • FITS and ASCII file formats well documented • Good • Interpretability • Data not properly flatfielded? • Could be improved with more notes in SEQ file or a cookbook of how to piece multiple files together (meta-meta data) • Archive quality • Inflight calibration of LEISA is important • A bit of an internal brain dump (see Interpretability), so currently tough for a Future Analyst to get into the brain of the LEISA team

  11. Suggested improvements • AAREADME.TXT: • Required Reading  Required Reading (see also Details) (cleans up SSR confusion) • Add seq_leisa_plutocruise.tabto Required Reading list • nh_trajectory is in document, not catalog (correct place?) • ICD: • needs an acronym list • Are APIDs the same as ApIDs? • Table 7-3 is confusing because ApIDs are used that are not defined (11 and 14)

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