PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT PUBLICATION_DATE = 2016-05-06 NOTE = "This file describes known errors or deficiencies in this archive volume set." END_OBJECT = TEXT END Users are encouraged to provide comments back to the Imaging Node of the PDS if errors or omissions are found either in data or in documentation. Please send comments by e-mail or U.S. mail to the Imaging Node PDS Operator: PDS - Flagstaff Imaging Node United states Geological Survey 2255 North Gemini Drive Flagstaff, AZ 86001 Electronic mail address: pdsmgr@usgs.gov An updated version of this file is maintained online at the Imaging Node of the Planetary Data System. The online errata list can be found there on the World Wide Web at http://pdsimg.jpl.nasa.gov/ This file, ERRATA.TXT, contains release notes and errata concerning the MESSENGER MDIS CDR archive. During the course of the MESSENGER mission the MDIS science team may update previously released data products or documentation; for example, updates may occur due to changes in calibration data or procedures. Updates will be reported in this file. Older versions of data and documentation will not be retained in the archive. Section A of this file contains an entry for each MESSENGER release with general information about the contents of the release, in order from newest to oldest. Updates to previously released files are reported in these entries, along with any known errata. Section B of this file contains general notes, if any, concerning the archive as a whole. ******** SECTION A ******** RELEASE NUMBER: 15 RELEASE DATE: 2016-05-06 DATA COVERAGE: 2004-08-19 to 2015-04-30 (Launch, Earth Cruise, Earth Flyby, Venus 1 Cruise, Venus 1 Flyby, Venus 2 Cruise, Venus 2 Flyby, Mercury 1 Cruise, Mercury 1 Flyby, Mercury 2 Cruise, Mercury 2 Flyby, Mercury 3 Cruise, Mercury 3 Flyby, Mercury 4 Cruise, Mercury Orbit, Mercury Orbit Year 2, Mercury Orbit Year 3, Mercury Orbit Year 4, Mercury Orbit Year 5) PRODUCT TYPES RELEASED FOR THIS ARCHIVE: MDIS CDR PRODUCT TYPES UPDATED FOR THIS ARCHIVE: MDIS CDR This is the final release for this volume which includes a complete redelivery of all calibrated data products. These have been reprocessed using the final SPICE parameters, all final calibrations and corrections, as applicable with the following exceptions: None. Prior to PDS release 15, CDRs for MDIS WAC narrow-band filter images were delivered in a single form, with a time-variable WAC responsivity correction applied. For release 15, these CDRs are delivered both with and without the time-variable WAC responsivity correction. This was done to allow future users of these products the flexibility to create their own corrections. -------------------------------------------------------------------------- RELEASE NUMBER: 14 RELEASE DATE: 2015-10-09 DATA COVERAGE: 2014-09-18 to 2015-04-30 (Mercury Orbit Year 4, Mercury Orbit Year 5) PRODUCT TYPES RELEASED FOR THIS ARCHIVE: MDIS CDR PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None No known errors or variances. -------------------------------------------------------------------------- RELEASE NUMBER: 13 RELEASE DATE: 2015-03-06 DATA COVERAGE: 2014-03-18 to 2014-09-17 (Mercury Orbit Year 4) PRODUCT TYPES RELEASED FOR THIS ARCHIVE: MDIS CDR PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None No known errors or variances. -------------------------------------------------------------------------- RELEASE NUMBER: 12 RELEASE DATE: 2014-09-05 DATA COVERAGE: 2013-09-18 to 2014-03-17 (Mercury Orbit Year 3) PRODUCT TYPES RELEASED FOR THIS ARCHIVE: MDIS CDR PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None REASON FOR UPDATES: N/A Comet Observations: This MDIS release contains observations of two comets: 2P/ENCKE 1 (1818 W1) and C/ISON (2012 S1). The target name, position and distance parameters are indicated in the product labels that are prepended to the image files. The products containing data from comet observations: 2P/ENCKE 1 (1818 W1): 433 images spanning 2013 doy 301-337 C/ISON (2012 S1): 281 images spanning 2013 doy 299-328 Note on the SIS: Products whose descriptions were added to the update of the MDIS CDR-RDR SIS included with this release (MP5s, HIEs, HIWs, LOIs, and RTMs) are undergoing PDS peer review and will be included in future advanced product releases (13 and/or 15). -------------------------------------------------------------------------- RELEASE NUMBER: 11 RELEASE DATE: 2014-03-07 DATA COVERAGE: 2013-03-18 to 2013-09-17 (Mercury Orbit Year 3) PRODUCT TYPES RELEASED FOR THIS ARCHIVE: MDIS CDR PRODUCT TYPES UPDATED FOR THIS ARCHIVE: MDIS CDR REASON FOR UPDATES: Updates to 3-color CDRs 3-color CDRs during the time period 2012_086 (26 March 21012) through 2013_076 (17 March 2013) are being redelivered. The redelivered CDRs include the following corrections and additions to radiometric calibration: (a) A small error in calculation of the correction for frame transfer smear is corrected. (b) The flat-field correction for WAC filters 3 and 6 is updated, using normalized median values of several hundred images acquired during orbit, to which a photometric correction is applied to remove a gradient to illumination across the images. (c) The WAC temperature-dependent responsivity is updated using median values of images covering a narrow range of photometric angle (d) A new term is added to the calibration equation, 'Correct', to correct for time variation in responsivity in all WAC filters (e) Following the apparent recovery of responsivity about 10 months after the 'contamination event', response in several WAC filters - especially 6 and 7 (F and G) - began to fall again relative that response through other filters. It was determined that the rate of falloff in response was related to the amount of time the filter was 'in position' for imaging; generally MDIS is pointed in the direction of the illuminated surface of Mercury. It is speculated that intense radiance from Mercury caused loss of transmission in the affected filters. A correction is maintained as part of the same look-up table derived to track dissipation of the contaminant. -------------------------------------------------------------------------- RELEASE NUMBER: 10 RELEASE DATE: 2013-09-06 DATA COVERAGE: 2012-09-18 to 2013-03-17 (Mercury Orbit Year 2) PRODUCT TYPES RELEASED FOR THIS ARCHIVE: MDIS CDR PRODUCT TYPES UPDATED FOR THIS ARCHIVE: MDIS CDR REASON FOR UPDATES: Updated calibration (version 4). Updates to TWIST_ANGLE values. Notes: CDRs prior to 2011-03-29 are being redelivered with updated TWIST_ANGLE values which are now in compliance with the MDISCDRSIS. -------------------------------------------------------------------------- RELEASE NUMBER: 9 RELEASE DATE: 2013-03-08 DATA COVERAGE: 2012-03-26 to 2012-09-17 (Mercury Orbit Year 2) PRODUCT TYPES RELEASED FOR THIS ARCHIVE: MDIS CDR PRODUCT TYPES UPDATED FOR THIS ARCHIVE: MDIS CDR REASON FOR UPDATES: Updated calibration (version 4). Updates to TWIST_ANGLE values. Notes: CDRs for the period 2011-03-29 to 2012-03-25 are being redelivered with updated TWIST_ANGLE values which are now in compliance with the MDISCDRSIS. For CDRs prior to 2011-03-29, it should be noted that the values for the TWIST_ANGLE keyword in the labels range between -180 and +180 degrees, inclusive. Negative values should be expected and are valid. -------------------------------------------------------------------------- RELEASE NUMBER: 8 RELEASE DATE: 2012-09-07 DATA COVERAGE: 2011-09-18 to 2012-03-25 (Mercury Orbit, Mercury Orbit Year 2) PRODUCT TYPES RELEASED FOR THIS ARCHIVE: MDIS CDR PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None REASON FOR UPDATES: New data from orbital operations. Notes: New CDRs are included in this release. It should be noted that the values for the TWIST_ANGLE keyword in the labels range between -180 and +180 degrees, inclusive. Negative values should be expected and are valid. The PDS label portions of the CDR files are being padded with null characters(0x00)rather than space characters (0x20). Although the NASAView software displays the files correctly, this may cause problems for other software. The problem will be corrected in a future release. -------------------------------------------------------------------------- RELEASE NUMBER: 7 RELEASE DATE: 2012-03-15 DATA COVERAGE: 2011-05-18 to 2011-09-17 (Mercury Orbit) PRODUCT TYPES RELEASED FOR THIS ARCHIVE: MDIS CDR PRODUCT TYPES UPDATED FOR THIS ARCHIVE: MDIS CDR REASON FOR UPDATES: New data from orbital operations. Notes: New CDRs are included in this release. All CDRs through delivery 5 have been redelivered to incorporate new label formats, which are explained in the CDR SIS documents. These redelivered files can be distinguished by an updated softare version id. The INDEX.TAB file has been updated to 1) include an ending "/" for path names and 2) string fields are left justified and padded with trailing spaces. The PDS label portions of the CDR files are being padded with null characters (0x00) rather than space characters (0x20). Although the NASAView software displays the files correctly, this may cause problems for other software. The problem will be corrected in a future release. -------------------------------------------------------------------------- RELEASE NUMBER: 6 RELEASE DATE: 2011-09-15 DATA COVERAGE: 2009-10-15 to 2011-05-17 (Mercury Orbit Insertion + 2 Months) PRODUCT TYPES RELEASED FOR THIS ARCHIVE: MDIS CDR PRODUCT TYPES UPDATED FOR THIS ARCHIVE: MDIS CDR REASON FOR UPDATES: New data from early Mercury orbit. Notes: New CDRs, not previously released, are included in this release. These CDRs include new label keywords, which are explained in the CDR SIS documents. These keywords are useful for data obtained while in orbit, but are less useful for previously released information. For this reason, the previous images with the new label values are not being released at this time. It should be noted that the values for the TWIST_ANGLE keyword in the labels range between -180 and +180 degrees, inclusive. Negative values should be expected and are valid. The PDS label portions of the CDR files are being padded with null characters (0x00) rather than space characters (0x20) as they should be. Although the NASAView software displays the files correctly, this may cause problems for other software. The problem will be corrected in a future release. -------------------------------------------------------------------------- RELEASE NUMBER: 5 RELEASE DATE: 2010-03-15 DATA COVERAGE: 2008-10-21 to 2009-10-14 (Mercury Flyby 3) PRODUCT TYPES RELEASED FOR THIS ARCHIVE: MDIS CDR PRODUCT TYPES UPDATED FOR THIS ARCHIVE: MDIS CDR REASON FOR UPDATES: Improvements to labels. Notes: All previously released CDRs have been released in this delivery, however, these CDRs have a version number of 3, the same version as the previous (release 4) delivery. Since the actual image data was not updated, the version number was not advanced. Labeling of CDR images was updated in response to an MDIS flight software upload in August 2009. Several additional items of housekeeping were added to the headers of down linked images, and propagated into the CDR labels. No changes in radiometric calibration were made at this time. In conjunction with the new label items, the INDEX table and label file were changed to include several new fields and several new terms were added to the MESSENGER MDIS local data dictionary. The new LLD terms are: IMG_ID_LSB, IMG_ID_MSB, PIV_POS_MOTOR; the updated term is: PIV_GOAL. Details concerning these changes can be obtained from the MDIS CDR SIS document, located in the DOCUMENT directory. Consult the change log table for relevant sections of the document. Note that these new terms have not yet been incorporated into the PDSDD.FUL data dictionary file. The data dictionary file has not been updated and remains the same as in the previous release. -------------------------------------------------------------------------- RELEASE NUMBER: 4 RELEASE DATE: 2009-04-15 DATA COVERAGE: 2008-01-29 to 2008-10-20 (Mercury Flyby 2) PRODUCT TYPES RELEASED FOR THIS ARCHIVE: MDIS CDR PRODUCT TYPES UPDATED FOR THIS ARCHIVE: MDIS CDR REASON FOR UPDATES: Calibration improvements. Notes: All previously released CDRs have been released in this delivery. The CDRs in release 4 have a version number of 3, and should be used in preference to CDRs with lower version numbers. In version 3 CDRs the responsivity correction was updated. The previous linear model of the effect of CCD temperature was replaced with a quadratic function. In addition the calibration of the NAC was adjusted. Version 3 CDRs were produced using: - version 0 of the dark model; - version 4 of the flat-field correction (except version 2 of the flat field correction in WAC filter 2 and NAC binned); - version 4 of the WAC responsivity correction, and version 3 of the NAC responsivity correction; and - in I/F images, version 0 of the solar spectrum. (Consult the CDR data set catalog for a description of the calibrations applied to CDR images, or the file CALINFO.TXT in the CALIB directory for version histories of each of the calibration matrices.) In version 3 CDRs the correction to responsivity for CCD temperature was updated in all WAC filters, replacing the previous linear with a quadratic function. In addition the calibration of the NAC was adjusted. -------------------------------------------------------------------------- RELEASE NUMBER: 3 RELEASE DATE: 2008-07-15 DATA COVERAGE: 2007-06-21 to 2008-01-28 (Mercury Flyby 1) PRODUCT TYPES RELEASED FOR THIS ARCHIVE: MDIS CDR PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None. Notes: Initial release of MDIS CDRs, through Mercury flyby 1. All CDRs in this release are at version 2. This was the first publicly released version of MDIS CDRs. Version 1 was a prototype version used for internal validation. In version 2 CDRs the labels were modified to include additional information on image statistics, and to replace the values in un- calibratable pixels (saturated pixels, pixels under the dark strip at the edge of the CCD) with special values. In addition the calibrations of WAC filters 3 and 6 (C and F, at 480 and 433 nm) were adjusted from the version 1. - version 0 of the dark model; - version 4 of the flat-field correction (except version 2 of the flat field correction in WAC filter 2 and NAC binned); - version 2 of the WAC responsivity correction (except version 3 in filters 3 and 6), and version 1 of the NAC responsivity correction; and - in I/F images, version 0 of the solar spectrum. (Consult the CDR data set catalog for a description of the calibrations applied to CDR images, or the file CALINFO.TXT in the CALIB directory for version histories of each of the calibration matrices.) In version 2 the labels were modified to include additional information on image statistics, and to replace the values in un- calibratable pixels (saturated pixels, pixels under the dark strip at the edge of the CCD) with special values. In addition the calibrations of WAC filters 3 and 6 (C and F, at 480 and 433 nm) were adjusted from the previous version. -------------------------------------------------------------------------- RELEASE NUMBER: 2 RELEASE DATE: 2007-08-20 DATA COVERAGE: 2004-08-03 to 2007-06-20 (Earth and Venus Flybys) PRODUCT TYPES RELEASED FOR THIS ARCHIVE: None. PRODUCT TYPES UPDATED FOR THIS ARCHIVE: None. Notes: Only EDRs were released. No CDRs were delivered. -------------------------------------------------------------------------- RELEASE NUMBER: 1 RELEASE DATE: n/a DATA COVERAGE: Pre-flight ground calibration data Notes: Ground calibration data and reports. No CDRs were delivered. ******** SECTION B ******** This section is provided for general notes concerning the archive as a whole. So far there are no general errors or notes to report.