Data Set Overview :  This data set contains Calibrated data taken by New Horizons Alice UV Spectrograph instrument during the JUPITER mission phase.  During the Jupiter flyby phase, the Alice instrument observed: Jupiter, Io and its torus, Europa, Ganymede, and Callisto. Types of observations included UV spectra of the targets as well as eclipses and stellar occultations.  Every observation provided in this data set was taken as a part of a particular sequence. A list of these sequences follows:  Sequence IDs & start times (end times are the start times of the following Sequence IDs) for the ALICE instrument during the JUPITER phase of the New Horizons Mission :  Sequence ID: JEAL_JALICECAL01 Start UTC: 2007-01-06T20:00:00 Start SCLK: 1/0030419517:30887 Description: JUPITER; Alice 501-504; Main objective to ensure a safe atonomous HV Ramp  Sequence ID: JEAL_EALICECAL01 Start UTC: 2007-01-27T08:00:00 Start SCLK: 1/0032190717:30790 Description: EUROPA; Alice pt source  Sequence ID: JEAL_EALICECAL02 Start UTC: 2007-02-15T11:42:00 Start SCLK: 1/0033845637:30682 Description: EUROPA; Alice point source  Sequence ID: JEAL_JOCC03 Start UTC: 2007-02-22T16:23:00 Start SCLK: 1/0034467297:30635 Description: FJUPITER; Stellar occultation, ingress (preferred); 3/4/2007 7:40:00 PM. Could be combined with the 'auroral response to magnetosphere' observation.  Sequence ID: JEAL_JOCC04 Start UTC: 2007-02-22T23:35:00 Start SCLK: 1/0034493217:30632 Description: FJUPITER; Stellar occultation, egress (preferred); 3/4/2007 7:40:00 PM. Could be combined with the 'auroral response to magnetosphere' observation.  Sequence ID: JEAL_ISUNMON01 Start UTC: 2007-02-24T00:40:00 Start SCLK: 1/0034583517:30624 Description: IO; Approach monitoring, Pele on limb; 02/23/07 05:42 - 02/23/07 06:12  Sequence ID: JEAL_EUVSPEC01 Start UTC: 2007-02-24T01:35:00 Start SCLK: 1/0034586817:30623 Description: EUROPA; UV spectra; Timing flexible  Sequence ID: JEAL_ISUNMON02 Start UTC: 2007-02-24T05:00:00 Start SCLK: 1/0034599117:30622 Description: IO; Approach monitoring ; Timing flexible  Sequence ID: JEAL_ISUNMON03 Start UTC: 2007-02-24T13:50:00 Start SCLK: 1/0034630917:30620 Description: IO; Approach monitoring ; Timing flexible  Sequence ID: JEAL_JAURORA01 Start UTC: 2007-02-24T23:00:00 Start SCLK: 1/0034663917:30617 Description: JUPITER; Lyman alpha/H3+ airglow map; LEISA N/S scan; ALICE TTAG  Sequence ID: JEAL_EUVSPEC02 Start UTC: 2007-02-25T00:00:00 Start SCLK: 1/0034667517:30616 Description: EUROPA; UV spectra; Timing flexible  Sequence ID: JEAL_JAURORA02 Start UTC: 2007-02-25T01:00:00 Start SCLK: 1/0034671117:30616 Description: JUPITER; Lyman alpha/H3+ airglow map; LEISA N/S scan; ALICE TTAG  Sequence ID: JEAL_EUVSPEC03 Start UTC: 2007-02-25T02:00:00 Start SCLK: 1/0034674717:30616 Description: EUROPA; UV spectra; Timing flexible  Sequence ID: JEAL_ISUNMON05 Start UTC: 2007-02-25T05:00:00 Start SCLK: 1/0034685517:30614 Description: IO; Approach monitoring ; Timing flexible  Sequence ID: JEAL_EUVSPEC04 Start UTC: 2007-02-25T05:35:00 Start SCLK: 1/0034687617:30614 Description: EUROPA; UV spectra; Timing flexible  Sequence ID: JEAL_ISUNMON06 Start UTC: 2007-02-25T08:30:00 Start SCLK: 1/0034698117:30613 Description: IO; Approach monitoring ; Timing flexible  Sequence ID: JEAL_GECLIPSE01 Start UTC: 2007-02-25T09:00:00 Start SCLK: 1/0034699917:30613 Description: GANYMEDE; Eclipse; 02/25/07 09:35 Need to know how the data taking is spread through the eclipse period. Assume for now that this one and the next one can be intermixed with potentially additional slews between Io and Europa  Sequence ID: JEAL_ISUNMON07 Start UTC: 2007-02-25T14:55:00 Start SCLK: 1/0034721217:30611 Description: IO; Approach monitoring ; Timing flexible  Sequence ID: JEAL_CCOMP01 Start UTC: 2007-02-25T17:33:00 Start SCLK: 1/0034730697:30610 Description: CALLISTO; Spectrum vs. phase; 02/25/07 12:30 - 02/26/07 05:00  Sequence ID: JEAL_ETERM01 Start UTC: 2007-02-25T18:05:00 Start SCLK: 1/0034732617:30610 Description: EUROPA; Term Topography; 02/25/07 17:45 - 02/25/07 18:15  Sequence ID: JEAL_ECOMP01 Start UTC: 2007-02-25T18:35:00 Start SCLK: 1/0034734417:30610 Description: EUROPA; Anti-Jupiter side composition; 2/25/2007 12:00 - 2/26/07 08:00  Sequence ID: JEAL_IECLIPSE01 Start UTC: 2007-02-25T19:10:00 Start SCLK: 1/0034736517:30609 Description: IO; Io Eclipse; 02/25/07 19:34 - 02/25/07 19:34  Sequence ID: JEAL_IOCC01 Start UTC: 2007-02-26T04:05:00 Start SCLK: 1/0034768617:30606 Description: IO; Stellar occultation; 3/4/2007 7:40:00 PM. Could be combined with the 'auroral response to magnetosphere' observation.  Sequence ID: JEAL_COCC01 Start UTC: 2007-02-26T07:13:00 Start SCLK: 1/0034779897:30605 Description: CALLISTO; Stellar occultation; 3/4/2007 7:40:00 PM. Could be combined with the 'auroral response to magnetosphere' observation.  Sequence ID: JEAL_GCOMP02 Start UTC: 2007-02-26T08:09:00 Start SCLK: 1/0034783257:30605 Description: GANYMEDE; Gap Fill composition; 02/26/07 00:00 - 02/26/07 17:00  Sequence ID: JEAL_ISUNMON09 Start UTC: 2007-02-26T08:40:00 Start SCLK: 1/0034785117:30605 Description: IO; Approach monitoring ; Timing flexible  Sequence ID: JEAL_IHIRESIR01 Start UTC: 2007-02-26T18:25:00 Start SCLK: 1/0034820217:30601 Description: IO; Hi-res coverage, composition; Timing flexible  Sequence ID: JEAL_ECOMP02 Start UTC: 2007-02-26T18:55:00 Start SCLK: 1/0034822017:30601 Description: EUROPA; Trailng side compostion; 02/26/07 13:00 - 02/27/07 00:00  Sequence ID: JEAL_IHIRES01 Start UTC: 2007-02-26T20:52:00 Start SCLK: 1/0034829037:30600 Description: IO; Hi-res coverage, Pele on limb; 02/26/07 19:52 - 02/26/07 21:52  Sequence ID: JEAL_COCC02 Start UTC: 2007-02-27T00:15:00 Start SCLK: 1/0034841217:30598 Description: CALLISTO; Stellar occultation; 3/4/2007 7:40:00 PM. Could be combined with the 'auroral response to magnetosphere' observation.  Sequence ID: JEAL_IHIRES02 Start UTC: 2007-02-27T01:05:00 Start SCLK: 1/0034844217:30598 Description: IO; Hi-res coverage; Timing flexible  Sequence ID: JEAL_EUVSPEC05 Start UTC: 2007-02-27T02:00:00 Start SCLK: 1/0034847517:30597 Description: EUROPA; UV spectra; Timing flexible  Sequence ID: JEAL_ETERM03 Start UTC: 2007-02-27T02:30:00 Start SCLK: 1/0034849317:30597 Description: EUROPA; Term Topography; 02/27/07 02:15 - 02/27/07 02:45  Sequence ID: JEAL_CCOMP02 Start UTC: 2007-02-27T04:50:00 Start SCLK: 1/0034857717:30596 Description: CALLISTO; Spectrum vs. phase; 02/26/07 23:00 - 02/27/07 12:15  Sequence ID: JEAL_IHIRESIR02 Start UTC: 2007-02-27T05:25:00 Start SCLK: 1/0034859817:30596 Description: IO; Hi-res coverage, composition; Timing flexible  Sequence ID: JEAL_EOCC01 Start UTC: 2007-02-27T06:50:00 Start SCLK: 1/0034864917:30595 Description: EUROPA; Stellar occultation; 3/4/2007 7:40:00 PM. Could be combined with the 'auroral response to magnetosphere' observation.  Sequence ID: JEAL_ETERM04 Start UTC: 2007-02-27T07:15:00 Start SCLK: 1/0034866417:30595 Description: EUROPA; Term Topography; 02/27/07 06:45 - 02/27/07 07:15  Sequence ID: JEAL_EUVSPEC06 Start UTC: 2007-02-27T07:50:00 Start SCLK: 1/0034868517:30595 Description: EUROPA; UV spectra; Timing flexible  Sequence ID: JEAL_IHIRES03 Start UTC: 2007-02-27T09:15:00 Start SCLK: 1/0034873617:30594 Description: IO; Hi-res coverage; Timing flexible  Sequence ID: JEAL_GBEST01 Start UTC: 2007-02-27T09:45:00 Start SCLK: 1/0034875417:30594 Description: GANYMEDE; Best resolution; 02/27/07 11:15 - 02/27/07 19:30  Sequence ID: JEAL_EECLIPSE01 Start UTC: 2007-02-27T10:24:00 Start SCLK: 1/0034877757:30593 Description: EUROPA; Eclipse; 02/27/07 10:36 Need to know how the data taking is spread through the eclipse period. Assume for now that this one and the next one can be intermixed with potentially additional slews between Io and Europa  Sequence ID: JEAL_IECLIPSE03 Start UTC: 2007-02-27T13:46:00 Start SCLK: 1/0034889877:30592 Description: IO; Io Eclipse; 2/27/07 14:10 Target so Alice and LEISA integrations can be done with the same pointing.  Sequence ID: JEAL_ETERM05 Start UTC: 2007-02-28T01:00:00 Start SCLK: 1/0034930317:30586 Description: EUROPA; Term Topography; 02/27/07 21:15 - 02/27/07 21:45  Sequence ID: JEAL_EBEST01 Start UTC: 2007-02-28T01:13:00 Start SCLK: 1/0034931097:30586 Description: EUROPA; Best resolution ; 02/27/07 14:00 - 02/28/07 03:30  Sequence ID: JEAL_CBEST01 Start UTC: 2007-02-28T03:10:00 Start SCLK: 1/0034938117:30585 Description: CALLISTO; Spectrum vs. phase (best res.); 02/27/07 16:15 - 02/28/07 03:00  Sequence ID: JEAL_IHIRES04 Start UTC: 2007-02-28T03:50:00 Start SCLK: 1/0034940517:30585 Description: IO; Hi-res coverage; Timing flexible  Sequence ID: JEAL_IHIRESIR03 Start UTC: 2007-02-28T04:30:00 Start SCLK: 1/0034942917:30584 Description: IO; Hi-res coverage, composition; Timing flexible  Sequence ID: JEAL_IOCC02 Start UTC: 2007-02-28T05:20:00 Start SCLK: 1/0034945917:30584 Description: IO; Stellar occultation; 3/4/2007 7:40:00 PM. Could be combined with the 'auroral response to magnetosphere' observation.  Sequence ID: JEAL_TUVSPEC02 Start UTC: 2007-02-28T10:10:00 Start SCLK: 1/0034963317:30581 Description: TORUS ANSA; UV spectra; Timing flexible  Sequence ID: JEAL_IHIRES05 Start UTC: 2007-02-28T11:00:00 Start SCLK: 1/0034966317:30581 Description: IO; Hi-res coverage- Prometheus on limb; Timing flexible  Sequence ID: JEAL_ISHINE01 Start UTC: 2007-02-28T13:05:00 Start SCLK: 1/0034973817:30580 Description: IO; Jupiter shine; 02/28/07 12:00 - 02/28/07 14:00  Sequence ID: JEAL_ETERM06 Start UTC: 2007-02-28T13:40:00 Start SCLK: 1/0034975917:30579 Description: EUROPA; Term Topography; 02/28/07 13:15 - 02/28/07 13:45  Sequence ID: JEAL_IHIRES06 Start UTC: 2007-02-28T15:15:00 Start SCLK: 1/0034981617:30578 Description: IO; Hi-res coverage; Timing flexible  Sequence ID: JEAL_IHIRESIR04 Start UTC: 2007-03-01T00:25:00 Start SCLK: 1/0035014617:30573 Description: IO; Hi-res nightside- Pele on limb; Timing flexible  Sequence ID: JEAL_INITEMON01 Start UTC: 2007-03-01T02:25:00 Start SCLK: 1/0035021817:30572 Description: IO; High phase monitoring; Timing flexible  Sequence ID: JEAL_ETERM07 Start UTC: 2007-03-01T03:30:00 Start SCLK: 1/0035025717:30571 Description: EUROPA; Term Topography; 03/01/07 05:15 - 03/01/07 05:45  Sequence ID: JEAL_INITEMON02 Start UTC: 2007-03-01T04:20:00 Start SCLK: 1/0035028717:30571 Description: IO; High Phase Monitoring; Timing flexible  Sequence ID: JEAL_EUVSPEC08 Start UTC: 2007-03-01T04:50:00 Start SCLK: 1/0035030517:30571 Description: EUROPA; UV spectra; Timing flexible  Sequence ID: JEAL_ETERM08 Start UTC: 2007-03-01T05:30:00 Start SCLK: 1/0035032917:30570 Description: EUROPA; Term Topography; 03/01/07 05:15 - 03/01/07 05:45  Sequence ID: JEAL_CUVSPEC03 Start UTC: 2007-03-01T05:50:00 Start SCLK: 1/0035034117:30570 Description: CALLISTO; Long UV integration; 2/25/07 12:00 - 3/3/07 12:00  Sequence ID: JEAL_INITEMON03 Start UTC: 2007-03-01T07:30:00 Start SCLK: 1/0035040117:30569 Description: IO; High phase monitoring; Timing flexible  Sequence ID: JEAL_TUVSPEC03 Start UTC: 2007-03-01T07:58:00 Start SCLK: 1/0035041797:30569 Description: TORUS ANSA; UV spectra; Timing flexible  Sequence ID: JEAL_IECLIPSE04 Start UTC: 2007-03-01T08:25:00 Start SCLK: 1/0035043417:30569 Description: IO; Io Eclipse; 3/1/07 8:38 Target so Alice and LEISA integrations can be done with the same pointing.  Sequence ID: JEAL_INITEMON04 Start UTC: 2007-03-01T18:00:00 Start SCLK: 1/0035077917:30563 Description: IO; High phase monitoring; Timing flexible  Sequence ID: JEAL_ISHINE02 Start UTC: 2007-03-01T22:00:00 Start SCLK: 1/0035092317:30561 Description: IO; Jupiter shine; 03/01/07 21:00 - 03/01/07 23:00  Sequence ID: JEAL_INITEMON05 Start UTC: 2007-03-02T06:00:00 Start SCLK: 1/0035121117:30557 Description: IO; High phase monitoring: Tvashtar on limb; Timing flexible  Sequence ID: JEAL_EUVSPEC09 Start UTC: 2007-03-02T07:55:00 Start SCLK: 1/0035128017:30556 Description: EUROPA; UV spectra; Timing flexible  Sequence ID: JEAL_INITEMON06 Start UTC: 2007-03-02T08:20:00 Start SCLK: 1/0035129517:30556 Description: IO; High phase monitoring; Timing flexible  Sequence ID: JEAL_EUVSPEC10 Start UTC: 2007-03-02T09:10:00 Start SCLK: 1/0035132517:30555 Description: EUROPA; UV spectra; Timing flexible  Sequence ID: JEAL_INITEMON07 Start UTC: 2007-03-02T11:18:00 Start SCLK: 1/0035140197:30554 Description: IO; High phase monitoring; Timing flexible  Sequence ID: JEAL_INITEMON08 Start UTC: 2007-03-02T14:00:00 Start SCLK: 1/0035149917:30553 Description: IO; High phase monitoring; Timing flexible  Sequence ID: JEAL_EUVSPEC11 Start UTC: 2007-03-02T14:20:00 Start SCLK: 1/0035151117:30553 Description: EUROPA; UV spectra; Timing flexible  Sequence ID: JEAL_INITEMON09 Start UTC: 2007-03-02T23:50:00 Start SCLK: 1/0035185317:30548 Description: IO; High phase monitoring; Timing flexible  Sequence ID: JEAL_EUVSPEC12 Start UTC: 2007-03-03T01:40:00 Start SCLK: 1/0035191917:30547 Description: EUROPA; UV spectra; Timing flexible  Sequence ID: JEAL_IECLIPSE05 Start UTC: 2007-03-03T04:00:00 Start SCLK: 1/0035200317:30546 Description: IO; High phase monitoring; Timing flexible  Sequence ID: JEAL_JAURORA03 Start UTC: 2007-03-03T06:30:00 Start SCLK: 1/0035209317:30545 Description: JUPITER; Lyman alpha/H3+ airglow map; LEISA N/S scan; ALICE TTAG  Sequence ID: JEAL_JAURORA04 Start UTC: 2007-03-03T07:30:00 Start SCLK: 1/0035212917:30544 Description: JUPITER; Lyman alpha/H3+ airglow map; LEISA N/S scan; ALICE TTAG  Sequence ID: JEAL_INITEMON11 Start UTC: 2007-03-03T08:15:00 Start SCLK: 1/0035215617:30544 Description: IO; High phase monitoring; Timing flexible  Sequence ID: JEAL_JAURORA05 Start UTC: 2007-03-03T08:40:00 Start SCLK: 1/0035217117:30544 Description: JUPITER; Lyman alpha/H3+ airglow map; LEISA N/S scan; ALICE TTAG  Sequence ID: JEAL_JAURORA06 Start UTC: 2007-03-03T09:30:00 Start SCLK: 1/0035220117:30543 Description: JUPITER; Lyman alpha/H3+ airglow map; LEISA N/S scan; ALICE TTAG  Sequence ID: JEAL_INITEMON12 Start UTC: 2007-03-03T10:15:00 Start SCLK: 1/0035222817:30543 Description: IO; High phase monitoring; Timing flexible  Sequence ID: JEAL_INITEMON13 Start UTC: 2007-03-03T12:25:00 Start SCLK: 1/0035230617:30542 Description: IO; High phase monitoring; Timing flexible  Sequence ID: JEAL_EUVSPEC13 Start UTC: 2007-03-03T12:50:00 Start SCLK: 1/0035232117:30542 Description: EUROPA; UV spectra; Timing flexible  Sequence ID: JEAL_INITEMON14 Start UTC: 2007-03-04T00:20:00 Start SCLK: 1/0035273517:30536 Description: IO; High phase monitoring; Timing flexible  Sequence ID: JEAL_EUVSPEC14 Start UTC: 2007-03-04T11:30:00 Start SCLK: 1/0035313717:30531 Description: EUROPA; UV spectra; Timing flexible  Sequence ID: JEAL_GECLIPSE02 Start UTC: 2007-03-04T12:50:00 Start SCLK: 1/0035318517:30530 Description: GANYMEDE; Eclipse; 03/04/07 12:50 - 03/04/07 12:50  Sequence ID: JEAL_GOCC01 Start UTC: 2007-03-04T17:15:00 Start SCLK: 1/0035334417:30528 Description: GANYMEDE; Stellar occultation; 3/4/2007 7:40:00 PM. Could be combined with the 'auroral response to magnetosphere' observation.  Sequence ID: JEAL_JALICECAL02 Start UTC: 2007-03-07T16:00:00 Start SCLK: 1/0035589117:30495 Description: EARTH; Will be moved to coincide with a DSN pass in this time-frame/ Alice SOC door opening  Sequence ID: JEAL_SALICECAL01 Start UTC: 2007-03-10T16:00:00 Start SCLK: 1/0035848317:30463 Description: STAR; Alice - SOC occultation test  For the list of observations and their parameters, refer to the data set index table (typically INDEX.TAB & CUMINDEX.TAB, initially in the /INDEX/ area of the data set).   Time :  There are several time systems, or units, in use in this dataset: New Horizons spacecraft MET (Mission Event Time or Mission Elapsed Time), UTC (Coordinated Universal Time), and TDB Barycentric Dynamical Time.  This section will give a summary description of the relationship between these time systems. For a complete explanation of these time systems the reader is referred to the documentation distributed with the NAIF/SPICE toolkit from the NAIF PDS node.  The most common time unit associated with the data is is the spacecraft MET. MET is a 32-bit counter on the New Horizons spacecraft that runs at a rate of about one increment per second starting from a value of zero at  19.January, 2006 18:08:02 UTC  or  JD2453755.256337 TDB.  The leapsecond adjustment (DELTA_ET : ET - UTC) over this dataset is 65.184s.  The data labels for any given product in this dataset usually contain at least one pair of common UTC and MET representations of the time at the middle of the observation. Other portions of the products, for example tables of data taken over periods of up to a day or more, will only have the MET time associated with a given row of the table.  For the data user's use in interpreting these times, a reasonable approximation (+/- 1s) of the conversion between Julian Day (TDB) and MET is as follows:  JD TDB : 2453755.256337 + ( MET / 86399.9998693 )  For more accurate calculations the reader is referred to the NAIF/SPICE documentation as mentioned above.    Processing :  The data in this data set were created by a software data processing pipeline on the Science Operation Center (SOC) at the Southwest Research Institute (SWRI), Department of Space Studies. This SOC pipeline assembled data as FITS files from raw telemetry packets sent down by the spacecraft and populated the data labels with housekeeping and engineering values, and computed geometry parameters using SPICE kernels. The pipeline did not resample the data.   Data :  The observations in this data set are stored in data files using standard Flexible Image Transport Sytem (FITS) format. Each FITS file has a corresponding detached PDS label file, named according to a common convention. The FITS files have image and/or table extensions; see the PDS label plus the DOCUMENT files for a description of these extensions and their contents.   This Data section comprises the following sub-topics:  - Filename/Product IDs - Other sources of information useful in interpreting these Data - CODMAC Level 3 ALICE data details - Instrument description - Visit Description, Visit Number, and Target in the Data Labels - Unresolved Liens on the Data   Filename/Product IDs --------------------  The filenames and product IDs of observations adhere to a common convention e.g.  ALI_0123456789_0X0AB_ENG_1.FIT ^^^ ^^^^^^^^^^ ^^^^^ ^^^ ^\__/ | | | | | ^^ | | | | | | | | | | | +--File type (includes dot) | | | | | - .FIT for FITS file | | | | | - .LBL for PDS label | | | | | - not part of product ID | | | | | | | | | +-- Version number from the SOC | | | | (Science Operations Center) | | | | | | | +--ENG for CODMAC Level 2 data * | | | SCI for CODMAC Level 3 data * | | | | | +--Application ID (ApID) of the telemetry data | | packet from which the data come | | | +--MET (Mission Event Time) i.e. Spacecraft Clock | +--Instrument designator  * For those datasets where the NH project is delivering CODMAC Level 1 & 2 data (REX & PEPSSI), ENG and SCI apply to CODMAC Level 1 & 2 data, respectively.   Instrument Instrument designators ApIDs : : : ALICE ALI 0X4B0 - 0X4B3  * Not all values in this range are used  There are other ApIDs that contain housekeeping values and other values. See the documentation for more details.   Here is a summary of the types of files generated by each ApID along with the instrument designator that go with each ApID:   ApIDs Data product description/Prefix(es) : : 0x4b0 - ALICE Pixel List Lossless (CDH 1)/ALI 0x4b1 - ALICE Pixel List Packetized (CDH 1)/ALI 0x4b4 - ALICE Pixel List Lossless (CDH 2)/ALI 0x4b5 - ALICE Pixel List Packetized (CDH 2)/ALI 0x4b2 - ALICE Histogram Lossless (CDH 1)/ALI 0x4b3 - ALICE Histogram Packetized (CDH 1)/ALI 0x4b6 - ALICE Histogram Lossless (CDH 2)/ALI 0x4b7 - ALICE Histogram Packetized (CDH 2)/ALI   Other sources of information useful in interpreting these Data --------------------------------------------------------------  Refer to the following files for more information about these data  NH Trajectory table:  /DOCUMENT/NH_TRAJECTORY.*  ALICE Field Of View definitions:  /DOCUMENT/NH_FOV.* /DOCUMENT/NH_ALICE_V###_TI.TXT     Instrument description ----------------------  Refer to the following files for a description of this instrument.  CATALOG  ALICE.CAT  DOCUMENTS  ALICE_SSR.* NH_ALICE_V###_TI.TXT (### is a version number) SOC_INST_ICD.*   Visit Description, Visit Number, and Target in the Data Labels ---------------------------------------------------------------  The observation sequences were defined in Science Activity Planning (SAP) documents, and grouped by Visit Description and Visit Number. The SAPs are spreadsheets with one Visit Description & Number per row. A nominal target is also included on each row and included in the data labels, but does not always match with the TARGET_NAME field's value in the data labels. In some cases, the target was designated as RA,DEC pointing values in the form ``RADEC:123.45,-12.34'' indicating Right Ascension and Declination, in degrees, of the target from the spacecraft in the Earth Equatorial J2000 inertial reference frame. This indicates either that the target was either a star, or that the target's ephemeris was not loaded into the spacecraft's attitude and control system which in turn meant the spacecraft could not be pointed at the target by a body identifier and an inertial pointing value had to be specified as Right Ascension and Declination values. The PDS standards do not allow putting a value like RADEC:... in the PDS TARGET_NAME keyword's value; in those cases the PDS TARGET_NAME value is set to CALIBRATION.   Unresolved Liens on the Data ----------------------------  None exist at the present time.   Ancillary Data :  The geometry items included in the data labels were computed using the SPICE kernels archived in the New Horizons SPICE data set, NH-X-SPICE-6-JUPITER-V1.0.   Reference Frame :   Geometric Parameter Reference Frame ----------------------------------- Earth Mean Equator and Vernal Equinox of J2000 (EMEJ2000) is the inertial reference frame used to specify observational geometry items provided in the data labels. Geometric parameters are based on best available SPICE data at time of data creation.   Epoch of Geometric Parameters ----------------------------- All geometric parameters provided in the data labels were computed at the epoch midway between the START_TIME and STOP_TIME label fields.    Software :  The observations in this data set are in standard FITS format with PDS labels, and can be viewed by a number of PDS-provided and commercial programs. For this reason no special software is provided with this data set.   Contact Information :  For any questions regarding the data format of the archive, contact the person whose PDS_USER_ID is ASTERN as described in PERSONNEL.CAT.

Confidence Level Overview : During the processing of the data in preparation for delivery with this volume, the packet data associated with each observation were used only if they passed a rigorous verification process including standard checksums.  In addition, raw (Level 2) observation data for which adequate contemporary housekeeping and other ancillary data are not available are not reduced to calibrated (Level 3) data. This issue is raised here to explain why some data products in the raw data set,  NH-J-ALICE-2-JUPITER-V2.0,  do not have corresponding data products in the calibrated data set,  NH-J-ALICE-3-JUPITER-V2.0.   Review : The data have been reviewed and validated by the instrument team members, as well as by SOC personnel.   ALICE updates for Data Sets V2.0 :   ALICE V2.0 data are processed using an improved effective area calibration, and the deadtime correction of histogram files now uses countrate data to account for intra-exposure changes in source countrate.