Index of /holdings/irtf-j_c-nsfcam-3-rdr-sl9-v1.0

Icon  Name                    Last modified      Size  Description
[DIR] Parent Directory - [DIR] catalog/ 22-Nov-1998 11:58 - [DIR] document/ 15-Nov-2010 11:12 - [DIR] DOWNLOAD/ 29-Nov-2010 07:52 - [DIR] index/ 29-Nov-2010 07:51 - [DIR] irtf/ 22-Nov-1998 12:22 - [TXT] aareadme.txt 25-Nov-1998 13:59 9.7K [TXT] dataset.html 03-Jun-2014 08:46 2.8K [TXT] errata.txt 17-Nov-2010 12:26 1.9K [   ] voldesc.cat 17-Nov-2010 12:27 3.1K [PDS catalog file]
PDS_VERSION_ID       = PDS3                                                   
RECORD_TYPE          = STREAM                                                 
OBJECT               = TEXT                                                   
  NOTE               = "AAREADME file for SL9 Data Set Collection Volume"     
  PUBLICATION_DATE   = 1997-10-28                                             
END_OBJECT           = TEXT                                                   
END                                                                           
                                                                              
***** File AAREADME.TXT                                                       
                                                                              
This data set collection contains IRTF image and tabular data.                
                                                                              
Only one data set is inlcuded on this volume.                                 
        IRTF NSFCAM     -       Near-IR images for Jupiter/SL9                
The Jupiter/SL9 data span the period from January 5 through August 7, 1994.   
                                                                              
The data files were submitted in the FITS form with documentation.   In this  
case, a FITS to PDS translator program (F2P) has been used to create the      
detached PDS labels for each corresponding FITS file.  The data were checked  
by manipulating the data with IDL routines developed at the Small Bodies Node 
(PDSREAD).    A complementary PDS to FITS translator program is also          
included for completeness.    Examples on the use of these routines and the   
source code are posted on the Small Bodies Node home page under Software      
Archives; also located at this address is the Quick Start Archiving guide.    
In the DOCUMENT directory are explanatory text files as well as digitized     
versions of the manuals that are in Postscript form with figures as TIFF      
files. All document files and most labels contain an 80-byte fixed length     
record, with a carriage return (ASCII 13) and line feed (ASCII 10) as the     
79th and 80th byte respectively.   All the tabular files in the INDEX and     
DOCUMENT directory are formatted according to PDS standards.   It should be   
noted that the index tables are formatted so that they may be read directly   
into many database management systems.   All fields are separated by commas,  
and character fields are inclosed in double quotes (").                       
                                                                              
An outline of the CD-ROM is shown in the table below:                         
                                                                              
AAREADME.TXT                      Short introduction to CDROM contents        
ERRATA.TXT                        Outline of known errata and additions       
VOLDESC.CAT                       Description of files on volume              
/CATALOG/*.CAT                    Mission, host, instrument, data set, & ref  
****************************************************************************  
A list of terms used for PDS specific files is listed below:                  
 DSCOLL - Data Set Collection catalog file                                    
 *HOST - spacecraft or observatory (institution) that supports a mission      
 *MSN - abbreviation for mission, used in filename for catalog                
 *DS - abbreviation for data set, used in filename for catalog                
 *INST (INS, IN) - abbreviations for instrument, used in filename for catalog 
***************************************************************************** 
/DOCUMENT/*.ASC,*.PS.*.TIF        Explanation for IRTF documents              
/DOCUMENT/ACRONYM.ASC             List of acronyms                            
/DOCUMENT/LOGNOTES/*.ASC,*.TIF    Log book files from observers               
/DOCUMENT/FILTER/*.ASC,*.PRN      Filter specs with transmission tables       
/DOCUMENT/FILTER/CVF/*.PRN        Transmission tables fro CVF filters         
/INDEX/*.TAB                      Indexes by object(s) and volume             
/IRTF/          19940105/flats                                                
                        /(the comet data)                                     
                        /stds                                                 
                19940106/process/(the comet data)                             
                        /flats                                                
                        /linechek                                             
                       	/stds                                                 
                19940107/(the comet data)                                     
                        /stds                                                 
                19940511/(the comet data)                                     
                        /flats                                                
                        /stds                                                 
                19940512/(the comet data)                                     
                        /stds                                                 
                19940712/(the comet data)                                     
                        /flats                                                
                        /pre_std                                              
                        /post_std                                             
                19940717/pre_std                                              
                        /precurs                                              
                        /impacts                                              
                        /post_std                                             
                19940718/(Jupiter-Ring data)                                  
                        /pre_std                                              
                        /post_std                                             
                19940719/flats                                                
                        /pre_std                                              
                        /(Jupiter-Ring data)                                  
                        /sl9_k/(fragment K data)                              
                        /post_std                                             
                19940727/(Jupiter-Ring data)                                  
                        /post_std                                             
                19940728/(Jupiter-Ring data)                                  
                        /post_std                                             
                19940807/(Jupiter-Ring data)                                  
                        /post_std                                             
                                                                              
                                                                              
The data directories for the NSFCAM data are organized by date.  In the       
early periods (Jan and May) effort was made to observe the comet (as an       
object) or various fields of the comet (encompassing many fragments).         
Various stars or asteroids were used as standards; these are separated in     
the stds directory.   Other calibration data include flats from reflected     
lights in the dome or off mirror covers.   The comet data is in its           
original form, except for Jan 6, when there was a problem in applying         
flats directly to the data; in that case, the directory is identified as      
data that has gone through a "process".                                       
                                                                              
During the crash week, part of the data was used to search for precursor      
phenomena such as a flash (hence the positioning with Io and Europa           
in the frame).   Other parts of the data were concentrated on the impacts     
of Jupiter or fragment K as it approached the planet (19940719/SL9_K).        
At other times, images were taken to emphasize Jupiter's rings or examine     
the earlier comet fields.   For the data on July 12 - Aug 7, the calibration  
sequences are organized into "pre_std" and "post_std" sets for a given date.  
Some of this data may include certain exposure sequences on Jupiter itself.   
For further explanation, review DATANOTE.ASC in the Document directory. Note  
that the TARGET_NAME is set to Jupiter or SL9 as outlined in the ERRATA file. 
                                                                              
The original filename (ORIGNAME) is captured in the FITS header.  If an image 
name begins with a number, such as 107 (january 7), 106 (january 6), 105      
(january 5),  511 (may 11),  512 (may 12), 712 (july 12), 717 (july 17), 718  
(july 18), 719 (july 19), 727 (july 27), 728 (july 28), 807 (aug 7), it       
pertains to a date. Files containing 'lin' are linearity check images.        
These are only found in the January 6th directory.                            
                                                                              
Small Bodies Node, Planetary Data System                                      
Department of Astronomy, University of Maryland                               
College Park, MD 20742-2421                                                   
e-mail to pdssbn.astro.umd.edu; URL-http://pdssbn.astro.umd.edu