Index of /holdings/di_iras-c-fpa-5-9p-images-v1.0
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voldesc.cat 28-Sep-2005 14:25 7.3K [PDS catalog file]
PDS_VERSION_ID = PDS3
RECORD_TYPE = "STREAM"
INSTRUMENT_HOST_NAME = "INFRARED ASTRONOMICAL SATELLITE"
INSTRUMENT_NAME = "FOCAL PLANE ARRAY"
OBJECT = TEXT
NOTE = "AAREADME.TXT describes this volume."
PUBLICATION_DATE = 2003-10-30 /* Peer Review Date */
END_OBJECT = TEXT
END
Overview
========
This volume contains images of comet 9P/Tempel, from its 1983
apparition, as derived from 12-, 25-, 60-, and 100-micron
observations acquired by the Focal Plane Array (FPA) instrument
on the Infrared Astronomical Satellite (IRAS):
- Radiance images, noise maps, and effective resolution tables
derived from reprocessed IRAS Additional/Pointed Observations.
- Radiance images and noise maps derived from reprocessed IRAS
Sky Survey Atlas scans.
- JPEG-rendered images of the dust trail based on data in the
ISSA Reject Set. These images are provided as documentation
for future reference.
These data support the analysis of the dust environment of Tempel 1
for the NASA Deep Impact Mission.
IRAS Additional Observations (AO)
---------------------------------
For these data, IRAS was aimed at Tempel 1 and images were acquired
at microns 12, 25, 60, and 100 microns by the FPA. Russell Walker
combined the images by satellite operations plan number, reprocessed
the data, and produced adiance and noise maps in FITS format and
effective beam resolutions in ASCII table format. An extensive
discussion of these data, provided by Walker, is included in the
documentation directory on this volume.
IRAS Sky Survey Atlas (ISSA) Scans
----------------------------------
Most of the IRAS observation time was spent in survey mode.
Walker identified ISSA scans that contained Tempel 1, then combined
the scans by satellite operations plan number, reprocessed the data,
and produced radiance and noise maps in FITS format. An extensive
discussion of these data is included in the documentation directory
on this volume.
ISSA Dust Trail Images
----------------------
Fifty-six (56) images in the ISSA showed the dust trail of Tempel 1.
These unprocessed images were converted from FITS to JPEG and included
in this data set as documentation for future reference. A discussion
of these images is included in the documentation directory on this
volume.
Volume Format
=============
This volume has been formatted according to the ISO-9660 level 2
Interchange Standard.
File Format
===========
PDS label formats and documentation conform to standards as defined by
the Planetary Data System Standards Reference (JPL Document D-7669,
Part 2JPL D-7669, Part 2, August 1, 2003, Version 3.6) and the Planetary
Science Data Dictionary (JPL D-7116, August 2002, Rev. E).
All text documents and other meta information files such as
descriptions, PDS object definitions and detached PDS labels are
stream format files, with a carriage return (ASCII 13) and a line
feed character (ASCII 10) at the end of the record. This allows
the files to be read by MS-DOS/Windows, Unix, and VMS operating
systems.
Directory and File Information
==============================
|--AAREADME.TXT This file
|
|--VOLDESC.CAT Description of the contents of this volume
|
|--[CATALOG] Mission, instrument, and data set descriptions
|
|--[DATA] Directory containing IRAS AO and Survey data of 9P
| |
| |--[AO]
| | |
| | |--[IMAGES]
| | | |
| | | |-- *.FIT Radiance and noise images from IRAS AO data
| | | +-- *.LBL Associated PDS labels
| | |
| | +--[EFFRES]
| | |
| | |-- *.TAB Effective resolution (beamsize) tables for AO images
| | +-- *.LBL Associated PDS labels
| |
| +--[SURVEY]
| |
| |--[IMAGES]
| |
| |-- *.FIT Radiance and noise images from ISSA data
| +-- *.LBL Associated PDS labels
|
|--[DOCUMENT] Directory containing documentation for these data
| |
| |-- DOCINFO.TXT Description of files in this directory
| |
| |--[AO]
| | |
| | +-- EXP_SUPP.* Explanatory Supplement document for AO data,
| | including a PDS label
| |
| |--[SURVEY]
| | |
| | +-- EXP_SUPP.* Explanatory Supplement document for ISSA images,
| | including a PDS label
| |
| |--[TRAIL]
| | |
| | |-- EXP_SUPP.* Document discussing the 9P trail images from the
| | | ISSA, including a PDS label
| | |
| | +-- I*JPG JPEG-rendered dust trail images
| |
| |--[AICD]
| | |
| | +--ARCHIVE* Archive Interface Control Document (AICD)
| |
| +-- ONLABELS.TXT Definitions of keywords found in the PDS labels
|
+--[INDEX]
|
|-- INDXINFO.TXT Description of files in this directory
+-- INDEX.* Table of parameters for AO and ISSA data files
Cognizant Persons
=================
Russell Walker reprocessed and supplied the AO and Survey FITS images,
the AO beamsize tables, and most of the documentation. Casey Lisse
provided the photometry tables based on Walker's reprocessed images.
Ray Espiritu of Applied Coherent Technology Corporation produced
data labels and index files under the direction of Stephanie McLaughlin,
PDS-SBN/University of Maryland. All other files, such as catalog files,
were produced by Stephanie McLaughlin, PDS-SBN/University of Maryland.