NAIF SPICE Kernels
Isis 2 Documentation
NAIF SPICE Kernels
NAIF SPICE KERNELS IN THE ISIS SYSTEM Mars Global Surveyor MOC Instrument Created: May 22, 2000 Updated: July 14, 2006
This document describes NAIF SPICE kernels in ISIS and how to find, retrieve, format, convert and install NAIF SPICE kernels for the Mars Orbital Camera (MOC) instrument on the Mars Global Surveyor (MGS) spacecraft.
This document does not attempt to explain in any great detail NAIF SPICE kernels except when needed to describe content and usage. NAIF has done an excellent job documenting their product.
cd /to_big_C_toolkit_area
ftp naif.jpl.nasa.gov
binary
prompt
cd /pub/naif/toolkit/C/[desired platform]
mget *
lcd /to_big_FORTRAN_toolkit_area
cd ../FORTRAN/[desired platform]
mget *
bye
Note that some of the files in the toolkits share the same name so they require separate directories. Under each toolkit directory, there is an "exe" directory that contains NAIF SPICE applications used to manipulate many of the kernels.
In each toolkit is a "doc" directory which contains extensive documentation of NAIF products. Interested users should consult these files for further information on SPICE kernels and toolkit information.
ISIS also uses both the FORTRAN and C SPICE NAIF programming toolkits to access NAIF SPICE kernels. The MGS/MOC software almost entirely uses the C toolkit.
$ISISMGSDATA/naif0008.tls - Leapseconds kernel (LSK). This file is required to perform conversion of time from one representation to another. This is a text based kernel. These kernels change infrequently.
$ISISMGSDATA/pck00006.tpc - Planetary constants kernel (PCK). This file contains data used to model the orientation and shape of the Sun, planets, and satellites. This is a text based kernel and also changes infrequently.
$ISISDATA/de405.bsp - Planetary Ephemerides kernel (SPK). This file contains information that model the sun, planets and satellites relative positions. This is a binary kernel. This kernel changes infrequently.
Most all NAIF SPICE kernels have an accompanying text file or label, that ends with ".lbl" appended to the kernel file name. We highly recommend users review these files as they contain very important and detailed information concerning the kernel.
Some SPICE kernels have an additional text file with a ".log" extention. These files are generated by USGS personnel using the NAIF "spacit" utility that summerizes the dates of coverage of the file. This will typically apply only to the volatile daily SPK and CK kernels.
The following is list of kernels that are in use and are anticipated for the MGS/MOC mission in the ISIS system. All kernel files are binary kernel files unless otherwise indicated:
$ISISMGSDATA/moc13.ti - MOC Instrument kernel (IK or I-kernel). This file contains the MOC instrument mounting offsets, and both the narrow and wide angle fields of view and focal lengths. This is a text based kernel. It generally will not change much at all.
$ISISMGSDATA/MGS_SCLKSCET.00059.tsc - Spacecraft Clock kernel (SCLK). This file contains information required for MGS spacecraft on-board clock to ephemeris time (ET) conversion. It also contains definitions of MGS reference frames. Reference frames, in this context, refer to the orientation of the spacecraft subsystems with respect to the spacecraft. This file is text based. It has in the past changed pretty frequently.
SPK Kernels - These kernels are the ephemeris data for the MGS spacecraft. They consist of two aerobraking cycles (AB1 and AB2), two science phase cycles (SPO1 and SPO2), 8 mapping phases (MAP1 through MAP8) and 23 Extended Mission phases (EXT1 through EXT23). There are also CK kernels that correspond to each one of these SPK kernels. The SPICE mapping cycles should not be confused with MOC mapping cycles. This is NAIF's designation for SPICE kernel release. A NAIF SPICE MGS/MOC cycle is a 28 days and each mapping phase contains 3 cycles of these data. Below is a complete list of acquired or anticipated SPK kernels including coverage dates and current status:
$ISISMGSDATA/mgs_ab1.bsp - Acquired. This file covers Aerobraking-1 (AB1) phase of the MGS mission (orbits 2 through 199):
COVERAGE BEGIN TIME (TDB): 1997 SEP 12 01:40:55.000
COVERAGE END TIME (TDB): 1998 MAR 26 05:25:00.000
The file coverage begins 40 minutes after MOI burn which started at approximately 1997 SEP 12 01:17 TDB.
$ISISMGSDATA/mgs_ab2.bsp - Acquired. This file covers Aerobraking-2 (AB2) phase of the MGS mission (orbits 573 through 1683):
COVERAGE BEGIN TIME (TDB): 1998 SEP 23 02:25:00.000
COVERAGE END TIME (TDB): 1999 MAR 09 01:00:00.000
$ISISMGSDATA/mgs_spo1.bsp - Acquired. This file covers Science Phasing Orbit 1 (SPO-1) phase of the MGS mission (orbits 200 through 328):
COVERAGE BEGIN TIME (TDB): 1998 MAR 25 17:15:00.000
COVERAGE END TIME (TDB): 1998 MAY 28 00:00:00.000
$ISISMGSDATA/mgs_spo2.bsp - Acquired. This file covers Science Phasing Orbit 2 (SPO-2) phase of the MGS mission (orbits 329 through 572):
COVERAGE BEGIN TIME (TDB): 1998 MAY 27 23:00:00.000
COVERAGE END TIME (TDB): 1998 SEP 23 02:30:00.000
$ISISMGSDATA/mgs_map1.bsp - Acquired. This file covers first three 28-day mapping cycles of the Mapping phase of the mission (mapping orbits 1 through 1040):
COVERAGE BEGIN TIME (TDB): 1999 MAR 09 01:00:00.000
COVERAGE END TIME (TDB): 1999 JUN 02 01:00:00.000
$ISISMGSDATA/mgs_map2.bsp - Acquired. This file covers 4th, 5th and 6th 28-day mapping cycles of the Mapping phase of the mission (mapping orbits 1040 through 2068):
COVERAGE BEGIN TIME (TDB): 1999 JUN 02 00:00:00.000
COVERAGE END TIME (TDB): 1999 AUG 25 01:00:00.000
$ISISMGSDATA/mgs_map3.bsp - Acquired. This file covers 7th, 8th and 9th 28-day mapping cycles of the Mapping phase of the mission (mapping orbits 2069 through 3096):
COVERAGE BEGIN TIME (TDB): 1999 AUG 25 00:00:00.000
COVERAGE END TIME (TDB): 1999 NOV 17 01:00:00.000
$ISISMGSDATA/mgs_map4.bsp - Acquired. This file covers 10th, 11th and 12th 28-day mapping cycles of the Mapping phase of the mission (mapping orbits 3097 through 4125):
COVERAGE BEGIN TIME (TDB): 1999 NOV 17 00:00:00.000
COVERAGE END TIME (TDB): 2000 FEB 09 01:00:00.000
$ISISMGSDATA/mgs_map5.bsp - Acquired. This file covers 13th, 14th and 15th 28-day mapping cycles of the Mapping phase of the mission (mapping orbits 4125 through 5152):
COVERAGE BEGIN TIME (TDB): 2000 FEB 09 00:00:00.000
COVERAGE END TIME (TDB): 2000 MAY 03 01:00:00.000
$ISISMGSDATA/mgs_map6.bsp - Acquired. This file covers 16th, 17th and 18th 28-day mapping cycles of the Mapping phase of the mission (mapping orbits 5153 through 6181):
COVERAGE BEGIN TIME (TDB): 2000 MAY 03 00:00:00.000
COVERAGE END TIME (TDB): 2000 JUL 26 01:00:00.000
$ISISMGSDATA/mgs_map7.bsp - Acquired. This file covers 19th, 20th and 21th 28-day mapping cycles of the Mapping phase of the mission (mapping orbits 6181 through 7209):
COVERAGE BEGIN TIME (TDB): 2000 JUL 26 00:00:00.000
COVERAGE END TIME (TDB): 2000 OCT 18 01:00:00.000
$ISISMGSDATA/mgs_map8.bsp - Acquired. This file covers 22nd, 23rd, 24th and a part of 25th -- through the end of the mapping phase -- 28-day mapping cycles of the Mapping phase of the mission (mapping orbits 7209 through 8505):
COVERAGE BEGIN TIME (TDB): 2000 OCT 18 00:00:00.000
COVERAGE END TIME (TDB): 2001 FEB 01 01:00:00.000
$ISISMGSDATA/mgs_ext1.bsp - Acquired. This file covers a part of 25th -- from the beginning of the Extended mission, -- whole 26th and 27th 28-day mapping cycles of the Extended phase of the mission (mapping orbits 8506 through 9264):
COVERAGE BEGIN TIME (TDB): 2001 FEB 01 00:00:00.000
COVERAGE END TIME (TDB): 2001 APR 04 01:00:00.000
$ISISMGSDATA/mgs_ext2.bsp - Acquired. This file covers the 28th, 29th and 30th 28-day mapping cycles of the Extended phase of the mission (mapping orbits 9264 through 10291):
COVERAGE BEGIN TIME (TDB): 2001 APR 04 00:00:00.000
COVERAGE END TIME (TDB): 2001 JUN 27 01:00:00.000
$ISISMGSDATA/mgs_ext3.bsp - Acquired. This file covers the 31st, 32nd, and 33rd 28-day mapping cycles of the Extended phase of the mission (mapping orbits 10291 through 11318):
COVERAGE BEGIN TIME (TDB): 2001 JUN 27 00:00:00.000
COVERAGE END TIME (TDB): 2001 SEP 19 01:00:00.000
$ISISMGSDATA/mgs_ext4.bsp - Acquired. This file covers the 34th, 35th, and 36th 28-day mapping cycles of the Extended phase of the mission (mapping orbits 11319 through 12345):
COVERAGE BEGIN TIME (TDB): 2001 SEP 19 00:00:00.000
COVERAGE END TIME (TDB): 2001 DEC 12 01:00:00.000
$ISISMGSDATA/mgs_ext5.bsp - Acquired. This file covers the 37th, 38th, and 39th 28-day mapping cycles of the Extended phase of the mission (mapping orbits 12346 through 13373):
COVERAGE BEGIN TIME (TDB): 2001 DEC 12 00:00:00.000
COVERAGE END TIME (TDB): 2002 MAR 06 01:00:00.000
$ISISMGSDATA/mgs_ext6.bsp - Acquired. This file covers the 40th, 41st, and 42nd 28-day mapping cycles of the Extended phase of the mission (mapping orbits 13374 through 14400):
COVERAGE BEGIN TIME (TDB): 2002 MAR 06 00:00:00.000
COVERAGE END TIME (TDB): 2002 MAY 29 01:00:00.000
$ISISMGSDATA/mgs_ext7.bsp - Acquired. This file covers the 43rd, 44th, and 45th 28-day mapping cycles of the Extended phase of the mission (mapping orbits 14401 through 15428):
COVERAGE BEGIN TIME (TDB): 2002 MAY 29 00:00:00.000
COVERAGE END TIME (TDB): 2002 AUG 21 01:00:00.000
$ISISMGSDATA/mgs_ext8.bsp - Acquired. This file covers the 46th, 47th, and 48th 28-day mapping cycles of the Extended phase of the mission (mapping orbits 15429 through 16455):
COVERAGE BEGIN TIME (TDB): 2002 AUG 21 00:00:00.000
COVERAGE END TIME (TDB): 2002 NOV 13 01:00:00.000
$ISISMGSDATA/mgs_ext9.bsp - Acquired. This file covers the 49th, 50th, and 51rst 28-day mapping cycles of the Extended phase of the mission (mapping orbits 16456 through 17483):
COVERAGE BEGIN TIME (TDB): 2002 NOV 13 00:00:00.000
COVERAGE END TIME (TDB): 2003 FEB 05 01:00:00.000
$ISISMGSDATA/mgs_ext10.bsp - Acquired. This file covers the 52nd, 53rd, and 54th 28-day mapping cycles of the Extended phase of the mission (mapping orbits 17483 through 18511):
COVERAGE BEGIN TIME (TDB): 2003 FEB 05 00:00:00.000
COVERAGE END TIME (TDB): 2003 APR 30 01:00:00.000
$ISISMGSDATA/mgs_ext11.bsp - Acquired. This file covers the 55th, 56th, and 57th 28-day mapping cycles of the Extended phase of the mission (mapping orbits 18511 through 19538):
COVERAGE BEGIN TIME (TDB): 2003 APR 30 00:00:00.000
COVERAGE END TIME (TDB): 2003 JUL 23 01:00:00.000
$ISISMGSDATA/mgs_ext12.bsp - Acquired. This file covers the 58th, 59th, and 60th 28-day mapping cycles of the Extended phase of the mission (mapping orbits 19539 through 20566):
COVERAGE BEGIN TIME (TDB): 2003 JUL 23 00:00:00.000
COVERAGE END TIME (TDB): 2003 OCT 15 01:00:00.000
$ISISMGSDATA/mgs_ext13.bsp - Acquired. This file covers the 61th, 62th, and 63th 28-day mapping cycles of the Extended phase of the mission (mapping orbits 20567 through 21593):
COVERAGE BEGIN TIME (TDB): 2003 OCT 15 00:00:00.000
COVERAGE END TIME (TDB): 2004 JAN 07 01:00:00.000
$ISISMGSDATA/mgs_ext14.bsp - Acquired. This file covers the 64th, 65th, and 66th 28-day mapping cycles of the Extended phase of the mission (mapping orbits 21594 through 22621):
COVERAGE BEGIN TIME (TDB): 2004 JAN 07 00:00:00.000
COVERAGE END TIME (TDB): 2004 MAR 31 01:00:00.000
$ISISMGSDATA/mgs_ext15.bsp - Acquired. This file covers the 67th, 68th, and 69th 28-day mapping cycles of the Extended phase of the mission (mapping orbits 22622 through 23648):
COVERAGE BEGIN TIME (TDB): 2004 MAR 31 00:00:00.000
COVERAGE END TIME (TDB): 2004 JUN 23 01:00:00.000
$ISISMGSDATA/mgs_ext16.bsp - Acquired. This file covers the 70th, 71rst, and 72nd 28-day mapping cycles of the Extended phase of the mission (mapping orbits 23649 through 24675):
COVERAGE BEGIN TIME (TDB): 2004 JUN 23 01:00:00.000
COVERAGE END TIME (TDB): 2004 SEP 15 01:00:00.000
$ISISMGSDATA/mgs_ext17.bsp - Acquired. This file covers the 73rd, 74th, and 75th 28-day mapping cycles of the Extended phase of the mission (mapping orbits 24676 through 25702):
COVERAGE BEGIN TIME (TDB): 2004 SEP 15 00:00:00.000
COVERAGE END TIME (TDB): 2004 DEC 08 01:00:00.000
$ISISMGSDATA/mgs_ext18.bsp - Acquired. This file covers the 76th, 77th, and 78th 28-day mapping cycles of the Extended phase of the mission (mapping orbits 25703 through 26729):
COVERAGE BEGIN TIME (TDB): 2004 DEC 08 00:00:00.000
COVERAGE END TIME (TDB): 2005 MAR 02 01:00:00.000
$ISISMGSDATA/mgs_ext19.bsp - Acquired. This file covers the 79th, 80th, and 81rst 28-day mapping cycles of the Extended phase of the mission (mapping orbits 25730 through 27757):
COVERAGE BEGIN TIME (TDB): 2005 MAR 02 00:00:00.000
COVERAGE END TIME (TDB): 2005 MAY 25 01:00:00.000
$ISISMGSDATA/mgs_ext20.bsp - Acquired. This file covers the 82nd, 83rd, and 84th 28-day mapping cycles of the Extended phase of the mission (mapping orbits 27758 through 28784):
COVERAGE BEGIN TIME (TDB): 2005 MAY 25 00:00:00.000
COVERAGE END TIME (TDB): 2005 AUG 17 01:00:00.000
$ISISMGSDATA/mgs_ext21.bsp - Acquired. This file covers the 85th, 86th, and 87th 28-day mapping cycles of the Extended phase of the mission (mapping orbits 28785 through 29811):
COVERAGE BEGIN TIME (TDB): 2005 AUG 17 00:00:00.000
COVERAGE END TIME (TDB): 2005 NOV 09 01:00:00.000
$ISISMGSDATA/mgs_ext22.bsp - Acquired. This file covers the 88th, 89th, and 90th 28-day mapping cycles of the Extended phase of the mission (mapping orbits 29812 through 30839):
COVERAGE BEGIN TIME (TDB): 2005 NOV 09 00:00:00.000
COVERAGE END TIME (TDB): 2006 FEB 01 01:00:00.000
$ISISMGSDATA/mgs_ext23.bsp - Acquired. This file covers the 91rst, 92nd, and 93rd 28-day mapping cycles of the Extended phase of the mission (mapping orbits (mapping orbits 30840 through 31866):
COVERAGE BEGIN TIME (TDB): 2006 FEB 01 00:00:00.000
COVERAGE END TIME (TDB): 2006 APR 26 01:00:00.000
$ISISMGSDATA/mgs_map_rec.bsp - Acquired. This is the daily SPK file that is continually updated by NAIF with spacecraft ephemeris data. Each day data is appended to this file when received and processed by NAIF.
COVERAGE BEGIN TIME (UTC): 2006 APR 25 23:58:54.814
COVERAGE END TIME (UTC): 2006 JUL 09 14:13:54.816
*$ISISMGSDATA/mgs_map.bsp - *NOTE: This file is included in ISISMGSDATA, however it is recommended that you use mgs_map_rec.bsp* - An updated MGS mission MOC kernel. Coverage times are:
COVERAGE BEGIN TIME (UTC): 2006 APR 25 23:58:54.814
COVERAGE END TIME (UTC): 2006 AUG 02 23:58:54.817
CK Kernels - These kernels are the complete set of MGS spacecraft orientation and angular velocity data relative to the 'J2000' inertial frame. Like the SPK kernels, they too consist of two aerobraking cycles (AB1 and AB2), two science phase cycles (SPO1 and SPO2), 8 mapping phases (MAP1 through MAP8) and 23 Extended Mission phases (EXT1 through EXT23). These files correspond directly with their SPK counterparts in time coverage. The SPICE mapping cycles should not be confused with MOC mapping cycles. This is NAIF's designation for SPICE kernel release. A NAIF SPICE MGS/MOC cycle is generally 28 days and each mapping phase contains 3 cycles of these data. Below is a complete list of acquired and anticipated CK kernels including converage dates and current status:
$ISISMGSDATA/mgs_sc_ab1.bc - Acquired. This file covers the whole Aerobraking-1 phase of the mission:
COVERAGE BEGIN TIME (UTC): 1997-09-13T00:00:00.355
COVERAGE END TIME (UTC): 1998-03-25T23:59:56.070
$ISISMGSDATA/mgs_sc_ab2.bc - Acquired. This file covers the whole aerobraking-2 phase of the mission:
COVERAGE BEGIN TIME (UTC): 1998-09-23T00:26:15.661
COVERAGE END TIME (UTC): 1999-03-08T21:16:08.042
$ISISMGSDATA/mgs_sc_spo1.bc - Acquired. This file covers the whole SPO-1 phase of the mission:
COVERAGE BEGIN TIME (UTC): 1998-03-26T00:00:00.070
COVERAGE END TIME (UTC): 1998-05-27T23:59:55.574
$ISISMGSDATA/mgs_sc_spo2.bc - Acquired. This file covers the whole SPO-2 phase of the mission:
COVERAGE BEGIN TIME (UTC): 1998-05-28T00:00:03.574
COVERAGE END TIME (UTC): 1998-09-22T23:06:30.662
$ISISMGSDATA/mgs_sc_map1.bc - Acquired. This file covers first three 28-day mapping cycles of the Mapping phase of the mission:
COVERAGE BEGIN TIME (UTC): 1999-MAR-09 00:04:32.038
COVERAGE END TIME (UTC): 1999-JUN-01 23:59:54.058
$ISISMGSDATA/mgs_sc_map2.bc - Acquired. This file covers fourth, fifth and sixth mapping cycles of the Mapping phase of the mission:
COVERAGE BEGIN TIME (UTC): 1999-JUN-02 00:00:02.058
COVERAGE END TIME (UTC): 1999-AUG-24 23:59:53.237
$ISISMGSDATA/mgs_sc_map3.bc - Acquired. This file covers 7th, 8th and 9th mapping cycles of the Mapping phase of the mission:
COVERAGE BEGIN TIME (UTC): 1999-AUG-25 00:00:05.232
COVERAGE END TIME (UTC): 1999-NOV-16 23:59:56.360
$ISISMGSDATA/mgs_sc_map4.bc - Acquired. This file covers 10th, 11th and 12th mapping cycles of the Mapping phase of the mission:
COVERAGE BEGIN TIME (UTC): 1999-NOV-17 00:00:04.360
COVERAGE END TIME (UTC): 2000-FEB-08 23:59:55.476
$ISISMGSDATA/mgs_sc_map5.bc - Acquired. This file covers 13th, 14th and 15th mapping cycles of the Mapping phase of the mission:
COVERAGE BEGIN TIME (UTC): 2000-FEB-09 00:00:03.477
COVERAGE END TIME (UTC): 2000-MAY-02 23:59:54.555
$ISISMGSDATA/mgs_sc_map6.bc - Acquired. This file covers 16th, 17th and 18th mapping cycles of the Mapping phase of the mission:
COVERAGE BEGIN TIME (UTC): 2000-MAY-03 00:00:58.554
COVERAGE END TIME (UTC): 2000-JUL-25 23:59:53.600
$ISISMGSDATA/mgs_sc_map7.bc - Acquired. This file covers 19th, 20th and 21st mapping cycles of the Mapping phase of the mission:
COVERAGE BEGIN TIME (UTC): 2000-JUL-26 00:01:01.600
COVERAGE END TIME (UTC): 2000-OCT-17 23:59:56.623
$ISISMGSDATA/mgs_sc_map8.bc - Acquired. This file covers 22nd, 23rd, 24th and a half of 25th -- through the end of the Mapping mission -- mapping cycles of the Mapping phase of the mission:
COVERAGE BEGIN TIME (UTC): 2000-OCT-18 00:01:00.622
COVERAGE END TIME (UTC): 2001-JAN-31 23:59:55.365
$ISISMGSDATA/mgs_sc_ext1.bc - Acquired. This file covers a half of 25th -- from the beginning of Extended Mission, -- whole 26th and 27th mapping cycles of the Extended phase of the mission:
COVERAGE BEGIN TIME (UTC): 2001-FEB-01 00:00:59.362
COVERAGE END TIME (UTC): 2001-APR-03 23:59:54.612
$ISISMGSDATA/mgs_sc_ext2.bc - Acquired. This file covers the 28th, 29th and 30th 28-day mapping cycles of the Extended phase of the mission (mapping orbits 9264 through 10291):
COVERAGE BEGIN TIME (TDB): 2001 APR 04 00:00:00.000
COVERAGE END TIME (TDB): 2001 JUN 27 01:00:00.000
$ISISMGSDATA/mgs_sc_ext3.bc - Acquired. This file covers the 31st, 32nd, and 33rd mapping cycles of the Extended phase of the mission:
COVERAGE BEGIN TIME (UTC): 2001-JUN-27 00:00:05.586
COVERAGE END TIME (UTC): 2001-SEP-18 23:59:56.546
$ISISMGSDATA/mgs_sc_ext4.bc - Acquired. This file covers the 34th, 35th, and 36th 28-day mapping cycles of the Extended phase of the mission (mapping orbits 11319 through 12345):
COVERAGE BEGIN TIME (UTC): 2001-SEP-19 00:00:04.547
COVERAGE END TIME (UTC): 2001-DEC-12 23:59:55.473
$ISISMGSDATA/mgs_sc_ext5.bc - Acquired. This file covers the 37th, 38th, and 39th 28-day mapping cycles of the Extended phase of the mission:
COVERAGE BEGIN TIME (UTC): 2001-12-12T00:00:03.485
COVERAGE END TIME (UTC): 2002-03-05T23:33:14.401
$ISISMGSDATA/mgs_sc_ext6.bc - Acquired. This file covers the 40th, 41st, and 42nd 28-day mapping cycles of the. Extended phase of the mission:
COVERAGE BEGIN TIME (UTC): 2002-MAR-06 00:07:27.400
COVERAGE END TIME (UTC): 2002-MAY-28 23:59:53.297
$ISISMGSDATA/mgs_sc_ext7.bc - Acquired. This file covers the 43rd, 44th, and 45th 28-day mapping cycles of the Extended phase of the mission:
COVERAGE BEGIN TIME (UTC): 2002-MAY-29 00:01:01.297
COVERAGE END TIME (UTC): 2002-AUG-20 22:22:08.168
$ISISMGSDATA/mgs_sc_ext8.bc - Acquired. This file covers the 46th, 47th, and 48th 28-day mapping cycles of the Extended phase of the mission:
COVERAGE BEGIN TIME (UTC): 2002-AUG-21 00:01:00.166
COVERAGE END TIME (UTC): 2002-NOV-12 23:59:55.023
$ISISMGSDATA/mgs_sc_ext9.bc - Acquired. This file covers the 49th, 50th, and 51rst 28-day mapping cycles of the Extended phase of the mission:
COVERAGE BEGIN TIME (UTC): 2002-NOV-13 00:00:59.022
COVERAGE END TIME (UTC): 2003-FEB-04 23:59:53.884
$ISISMGSDATA/mgs_sc_ext10.bc - Acquired. This file covers the 52nd, 53rd, and 54th 28-day mapping cycles of the Extended phase of the mission:
COVERAGE BEGIN TIME (UTC): 2003-FEB-05 00:00:57.863
COVERAGE END TIME (UTC): 2003-APR-29 23:44:44.695
$ISISMGSDATA/mgs_sc_ext11.bc - Acquired. This file covers the 55th, 56th, and 57th 28-day mapping cycles of the Extended phase of the mission:
COVERAGE BEGIN TIME (UTC): 2003-APR-30 00:01:00.694
COVERAGE END TIME (UTC): 2003-JUL-22 23:59:55.525
$ISISMGSDATA/mgs_sc_ext12.bc - Acquired. This file covers the 58th, 59th, and 60th 28-day mapping cycles of the Extended phase of the mission:
COVERAGE BEGIN TIME (UTC): 2003-JUL-23 00:00:59.525
COVERAGE END TIME (UTC): 2003-OCT-14 23:59:54.343
$ISISMGSDATA/mgs_sc_ext13.bc - Acquired. This file covers the 61th, 62th, and 63th 28-day mapping cycles of the Extended phase of the mission:
COVERAGE BEGIN TIME (UTC): 2003-OCT-15 00:00:02.343
COVERAGE END TIME (UTC): 2004-JAN-06 23:59:53.144
$ISISMGSDATA/mgs_sc_ext14.bc - Acquired. This file covers the 64th, 65th, and 66th 28-day mapping cycles of the Extended phase of the mission:
COVERAGE BEGIN TIME (UTC): 2004-JAN-07 00:01:01.144
COVERAGE END TIME (UTC): 2004-MAR-30 23:59:55.922
$ISISMGSDATA/mgs_sc_ext15.bc - Acquired. This file covers the 67th, 68th, and 69th 28-day mapping cycles of the Extended phase of the mission:
COVERAGE BEGIN TIME (UTC): 2004-MAR-31 00:00:59.921
COVERAGE END TIME (UTC): 2004-JUN-22 23:59:54.683
$ISISMGSDATA/mgs_sc_ext16.bc - Acquired. This file covers the 70th, 71rst, and 72nd 28-day mapping cycles of the Extended phase of the mission:
COVERAGE BEGIN TIME (UTC): 2004-JUN-23 00:00:30.681
COVERAGE END TIME (UTC): 2004-SEP-14 16:53:05.438
$ISISMGSDATA/mgs_sc_ext17.bc - Acquired. This file covers the 73rd, 74th, and 75th 28-day mapping cycles of the Extended phase of the mission:
COVERAGE BEGIN TIME (UTC): 2004-SEP-15 19:13:41.420
COVERAGE END TIME (UTC): 2004-DEC-07 23:59:56.167
$ISISMGSDATA/mgs_sc_ext18.bc - Acquired. This file covers the 76th, 77th, and 78th 28-day mapping cycles of the Extended phase of the mission:
COVERAGE BEGIN TIME (UTC): 2004-DEC-08 00:01:00.167
COVERAGE END TIME (UTC): 2005-MAR-01 23:59:54.896
$ISISMGSDATA/mgs_sc_ext19.bc - Acquired. This file covers the 79TH, 80th, and 81rst 28-day mapping cycles of the Extended phase of the mission:
COVERAGE BEGIN TIME (UTC): 2005-MAR-02 00:00:58.896
COVERAGE END TIME (UTC): 2005-MAY-24 23:59:56.626
$ISISMGSDATA/mgs_sc_ext20.bc - Acquired. This file covers the 82nd, 83rd, and 84th 28-day mapping cycles of the Extended phase of the mission:
COVERAGE BEGIN TIME (UTC): 2005-MAY-25 00:01:00.621
COVERAGE END TIME (UTC): 2005-AUG-16 23:59:52.847
$ISISMGSDATA/mgs_sc_ext21.bc - Acquired. This file covers the 85th, 86th, and 87th 28-day mapping cycles of the Extended phase of the mission:
COVERAGE BEGIN TIME (UTC): 2005-AUG-17 00:00:06.844
COVERAGE END TIME (UTC): 2005-NOV-08 23:59:55.055
$ISISMGSDATA/mgs_sc_ext22.bc - Acquired. This file covers the 88th, 89th, and 90th 28-day mapping cycles of the Extended phase of the mission:
COVERAGE BEGIN TIME (UTC): 2005-NOV-09 00:00:59.055
COVERAGE END TIME (UTC): 2006-JAN-31 23:59:52.747
$ISISMGSDATA/mgs_sc_ext23.bc - Acquired. This file covers the 91rst, 92nd, and 93rd 28-day mapping cycles of the Extended phase of the mission:
COVERAGE BEGIN TIME (UTC): 2006-FEB-01 00:01:00.747
COVERAGE END TIME (UTC): 2006-APR-25 23:59:55.411
$ISISMGSDATA/mgs_sc_map.bc - NOT Acquired. Constructed from daily CK files starting the day after the last merged CK kernel NAIF delivered.
*NOTE*: THIS FILE IS NO LONGER UPDATED REGULARLY. UPDATES OCCUR BY DEMAND BY MISSION RELATED PERSONEL
Here is a complete table of MOC SPICE kernel coverage dates. Note the table gives SPK file names and will end in ".bsp". CK files will correspond to these dates but will be of the form "mgs_sc_map[1-8].bc" and "mgs_sc_ext[1-18].bc":
SPK File Map. Start Stop Start Stop
Name Cycles Date Date Orbit# Orbit#
-------- ------ ---------- ---------- ------ ------
mgs_map1 1-3 1999-03-09 1999-06-01 1 1040
mgs_map2 4-6 1999-06-02 1999-08-24 1041 2068
mgs_map3 7-9 1999-08-25 1999-11-16 2069 3096
mgs_map4 10-12 1999-11-17 2000-02-08 3097 4124
mgs_map5 13-15 2000-02-09 2000-05-02 4125 5152
mgs_map6 16-18 2000-05-03 2000-07-25 5153 6180
mgs_map7 19-21 2000-07-26 2000-10-17 6181 7208
mgs_map8 22-25* 2000-10-18 2001-01-31 7209 8505
(*) ``map8'' file covers
approximately 3.7 cycles
because it extends through
the end of mapping mission.
current and expected merged extended
SPK file coverage intervals are:
SPK File Map. Start Stop Start Stop
Name Cycles Date Date Orbit# Orbit#
-------- ------ ---------- ---------- ------ ------
mgs_ext1 25-27* 2001-02-01 2001-04-03 8506 9264
mgs_ext2 28-30 2001-04-04 2001-06-26 9265 10291
mgs_ext3 31-33 2001-06-27 2001-09-18 10291 11318
mgs_ext4 34-36 2001-09-19 2001-12-11 11319 12345
mgs_ext5 37-39 2001-12-12 2002-03-05 12346 13373
mgs_ext6 40-42 2002-03-06 2002-05-28 13374 14400
mgs_ext7 43-45 2002-05-29 2002-08-21 14401 15428
mgs_ext8 46-48 2002-08-21 2002-11-13 15429 16455
mgs_ext9 49-51 2002-11-13 2003-02-05 16456 17483
mgs_ext10 52-54 2003-02-05 2003-04-30 17484 18511
mgs_ext11 55-57 2003-04-30 2003-07-23 18511 19538
mgs_ext12 58-60 2003-07-23 2003-10-15 19539 20566
mgs_ext13 61-63 2003-10-15 2004-01-07 20567 21593
mgs_ext14 64-66 2004-01-07 2004-03-30 21594 22621
mgs_ext15 67-69 2004-03-31 2004-06-23 22622 23648
mgs_ext16 70-72 2004-06-23 2004-09-15 23649 24675
mgs_ext17 73-75 2004-09-15 2004 12-08 23676 25702
mgs_ext18 76-78 2004-12-08 2005 03-02 25703 26729
mgs_ext19 79-81 2005-03-02 2005 05-25 26730 27757
mgs_ext20 82-84 2005-05-25 2005 08-17 27758 28784
mgs_ext21 85-87 2005-08-17 2005-11-08 28785 29811
mgs_ext22 88-90 2005-11-09 2006-01-31 29812 30839
mgs_ext23 91-93 2006-02-01 2006-02-01 30840 31866
(*) ``ext1'' file covers 2.3 cycles
because it starts at the
beginning of extended mission.
ISIS uses a file in $ISISMGSDATA called "moc_kernels.def.x" that contains a list of all MOC SPICE kernels. Note that "x" denotes a version number for the file that can be continually increased as new versions are added. Only the highest number is used to load NAIF kernels by ISIS applications. All ISIS applications that require SPICE data open this file and load all files specified therein. Thus, no applications need be changed...simply, this file can be updated when new SPICE is acquired. Comments in this file are indicated by a '#' character. Any characters that occur after the '#' are ignored. Blank lines are allowed, but ignored. All other contents of this file are deemed to be a SPICE kernel file. Each one that occurs is loaded (via the NAIF toolkit "furnsh" routine). Note that if the file does not exist it is ignored and not loaded. It is not an error. This allows one to include all anticipated SPICE kernels and will not require the file to be changed.
MOC binary SPICE kernels are delivered in a form compatable with Sun systems. This format is not compatable with Intel Linux or Compaq Alpha Tru64 systems so they must be converted on a Sun to transfer format, moved to a Linux or Compaq system and converted to binary. Obviously, this requires access to a Sun or Sun compatable system.
MOC SPICE kernels are updated daily. Usually, there is SPICE from the day before for both SPK and CK data. MGS/MOC SPK kernels are located in /pub/naif/MGS/kernels/spk. MGS/MOC CK kernels are located in /pub/naif/MGS/kernels/ck. Other directories exist in /pub/naif/MGS/kernels that can be checked periodically for new SPICE kernels.
% ftp naif.jpl.nasa.gov
# Enter "anonymous" for user name and "your_name@" for password.
ftp> cd /pub/naif/MGS/kernels/spk
ftp> bin
ftp> get mgs_map.bsp
ftp> get mgs_map_rec.bsp
ftp> bye
Once these files have been transfered to your Sun or Sun compatable machine, they need to be converted to transfer format, copied to your Linux or Compaq machine and converted back to binary. The NAIF programs to do this are "toxfr" and "tobin", respectively. You can use either the FORTRAN or C toolkit versions of these applications. These commands will be done using the C version of the programs unless otherwise indicated.
On the Sun system, use the following command to convert the files to transfer format:
$CSPICE/exe/toxfr mgs_map.bsp mgs_map.bsp.xfr $CSPICE/exe/toxfr mgs_map_rec.bsp mgs_map_rec.bsp.xfr
Now copy the files to your Linux or Compaq machine and convert back to binary format:
$CSPICE/exe/tobin mgs_map.bsp.xfr mgs_map.bsp $CSPICE/exe/tobin mgs_map_rec.bsp.xfr mgs_map_rec.bsp
We merge all the daily CK files from the first day following the most recently released merged CK kernel from NAIF up the day they are downloaded. This new file becomes $ISISMGSDATA/mgs_sc_map.bc. The file $ISISMGSDATA/mgs_sc_map.bc.log is the output of the NAIF program "brief" on this file.
In order to combine/merge the daily CK files, we have obtained a special program from NAIF that is not part of the toolkit. It is called "dafcat" and it basically takes a list of binary DAF formatted files and concatenates them into a single file. It is included in the ISIS NAIF toolkit.
One more note about the CK daily files produced by NAIF. They are named by the day of the year (DOY) rather than YEAR-MONTH-DAY. This can be a bit annoying to determine the exact day you are interested in if it is not readily available. Each of these daily CK files have a ".lbl" label file associated with it. These label files also do not contain the month or day of the month in them either. (Hint: See the NAIF program "chronos".)
To transfer the daily files, I typically will create a directory path that has ./ck/daily in it and store all the CKs ftp'ed from NAIF there. It will become more apparent why a bit later.
To ftp the daily CK file from NAIF to your ./ck/daily directory use the following set of commands (again, % denotes Unix prompt, "ftp>" denotes ftp prompts, and # for comments):
% ftp naif.jpl.nasa.gov
# Enter "anonymous" for user name and "your_name@" for password.
ftp> cd /pub/naif/MGS/kernels/ck
ftp> bin
ftp> prompt # Turns prompting off for multiple file get
ftp> mget mgs_spice_c_kernel-2001-*.bc*
ftp> bye
This will get all the daily CK files for the year 2001. You can target specific days of files if so desired. This transfers both the binary CKs and their associated label files.
Once these files have been transfered to your Sun or Sun compatable machine, they need to be concatenated into a single file, converted to transfer format, copied to your Linux or Compaq machine and converted back to binary. The NAIF programs to do this are "dafcat", "toxfr" and "tobin", respectively. You can use either the FORTRAN or C toolkit versions of these applications. These commands will be done using the C version of the programs unless otherwise indicated.
On the Sun system, use the following command to convert the files to transfer format:
First, we make a list of all the daily CK files, one file per line, to a list file. This will be used for input into the special NAIF application "dafcat" which is a FORTRAN application (note the "$FSPICE" logical).
/bin/ls -1 *.bc > daily_ck.lis
$FSPICE/exe/dafcat mgs_sc_map.bc < daily_ck.lis $CSPICE/exe/toxfr mgs_sc_map.bc mgs_sc_map.bc.xfr
Now copy the file to your Intel Linux or Compaq Alpha machine and convert back to binary format:
$CSPICE/exe/tobin mgs_sc_map.bc.xfr mgs_sc_map.bc
Also, it is highly recommended to put comments in concatenated/merged CK files that describe the contents. See the NAIF toolkit program, "commnt".
Other NAIF programs that may be of interest are "ckslicer", "spacit", "brief", "spkmerge", and "ckspanit".
Questions can be directed to the Isis Support Center (URL: http://isis.astrogeology.usgs.gov/Isis Support/), or contact:
Kris Becker
kbecker@usgs.gov
USGS
2255 N. Gemini Drive
Flagstaff, Az 86001
(928) 556-7124
Contact us online at the Isis Support Center: http://isisdist.wr.usgs.gov