Data Set Overview  :    This data set contains Raw data taken by New Horizons  Long Range Reconnaissance Imager  instrument during the LAUNCH mission phase.    During the Launch Phase, LORRI conducted a variety of instrument  commissioning activities in preparation for science operations.  An extensive series of bias images was collected during the  spring and summer of 2006, before the LORRI aperture door was  opened. Images were also collected of LORRI's internal lamps.  The LLORRI aperture door was opened on 2006 August 29, and an  extensive series of calibration observations of stars in the  open cluster M7 was performed during the next several days.  Commissioning test observations were also performed on the  planetary targets Jupiter, Uranus, Neptune, and Pluto. The  Jovian observations were conducted specifically to test LORRI's  ability to perform imaging using exposure times that were short  compared to the frame transfer time (i.e., shorter than 13 ms).  Some solar scattered light observations were performed during a  Ralph commissioning test, but only histograms (APID:0x611) were  collected, not the images themselves.      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 LORRI instrument  during the LAUNCH phase of the New Horizons Mission  :    Sequence ID: COLO_LORRI-005  Start UTC: 2006-02-24T00:00:00  Start SCLK: 1/0003045117:33729  Description: 24 Feb 2006: all currents, voltages, power, and  temperatures nominal    Sequence ID: COLO_LORRI-025  Start UTC: 2006-04-23T00:00:00  Start SCLK: 1/0008056317:32411  Description: 23-24 April and 2-3 May 2006: in-flight noise test    Sequence ID: COLO_LORRI-006  Start UTC: 2006-07-30T00:00:00  Start SCLK: 1/0016523517:31575  Description: 30 Jul 2006: Dark series bias images, cover door closed    Sequence ID: COLO_LORRI-007  Start UTC: 2006-08-29T00:00:00  Start SCLK: 1/0019115517:31416  Description: 29 Aug 2006: Door opening verification images (Messier  7)    Sequence ID: COLO_LORRI-010/COLO_LORRI-018  Start UTC: 2006-08-31T00:00:00  Start SCLK: 1/0019288317:31406  Description: 31 Aug 2006: Radiometric/PSF images (Messier 7) MVIC  co-alignment images    Sequence ID: COLO_LORRI-027  Start UTC: 2006-09-04T00:00:00  Start SCLK: 1/0019633917:31388  Description: 04 Sep 2006: Jupiter exposure/auto exposure/scattered  light tests    Sequence ID: COLO_LORRI-029/COLO_LORRI-030  Start UTC: 2006-09-10T00:00:00  Start SCLK: 1/0020152317:31360  Description: 10,19 Sep 2006: Uranus/Neptune    Sequence ID: COLO_LORRI-023a  Start UTC: 2006-09-21T00:00:00  Start SCLK: 1/0021102717:31311  Description: 21, 24 Sep 2006: Pluto    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 2 LORRI 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  : : :  LORRI LOR 0X630 - 0X634    * 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)  : :  0x630 - LORRI High-res Lossless (CDH 1)/LOR  0x636 - LORRI High-res Lossless (CDH 2)/LOR  0x632 - LORRI High-res Lossy (CDH 1)/LOR  0x638 - LORRI High-res Lossy (CDH 2)/LOR  0x631 - LORRI High-res Packetized (CDH 1)/LOR  0x637 - LORRI High-res Packetized (CDH 2)/LOR  0x633 - LORRI 4x4 Binned Lossless (CDH 1)/LOR  0x639 - LORRI 4x4 Binned Lossless (CDH 2)/LOR  0x635 - LORRI 4x4 Binned Lossy (CDH 1)/LOR  0x63B - LORRI 4x4 Binned Lossy (CDH 2)/LOR  0x634 - LORRI 4x4 Binned Packetized (CDH 1)/LOR  0x63A - LORRI 4x4 Binned Packetized (CDH 2)/LOR      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.*    LORRI Field Of View definitions:    /DOCUMENT/NH_FOV.*  /DOCUMENT/NH_LORRI_V###_TI.TXT          Instrument description  ----------------------    Refer to the following files for a description of this instrument.    CATALOG    LORRI.CAT    DOCUMENTS    LORRI_SSR.*  NH_LORRI_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-LAUNCH-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 ACHENG  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-X-LORRI-2-LAUNCH-V1.1,    do not have corresponding data products in the calibrated data set,    NH-X-LORRI-3-LAUNCH-V1.1.      Review  :  The data have been reviewed and validated by the instrument team  members, as well as by SOC personnel.    LORRI updates for Data Sets V1.1  :      Improvements to geometry & timing in data header sections  ---------------------------------------------------------    The data pipeline re-ran the data with updated SPICE files; SPICE  files contain information relating to geometry and timing of  observations. This may have changed values in the data PDS  labels and the data files' FITS header section (referred to as  OBJECT *_HEADER in the PDS labels), but not the data in those files.      Improvements to ancillary files  -------------------------------    Some of the supporting files, mainly in the /DOCUMENT/  subdirectory hierarchy, have been updated for content  and for readability. The primary file for which this  was done was the SOC Instrument Interface Control  Document (often referred to as the SOC Instrument ICD).