Index of /holdings/ihw-c-spec-2-edr-crommelin-v1.0
Name Last modified Size Description
Parent Directory -
catalog/ 25-May-2011 08:12 -
data/ 25-May-2011 08:12 -
document/ 25-May-2011 08:27 -
DOWNLOAD/ 23-May-2012 11:08 -
geometry/ 24-May-2011 11:04 -
index/ 23-May-2012 11:08 -
aareadme.txt 24-May-2011 11:26 3.5K
dataset.html 30-Mar-2017 12:34 2.5K
voldesc.cat 10-Jun-2011 10:55 3.6K [PDS catalog file]
PDS_VERSION_ID = PDS3
RECORD_TYPE = "STREAM"
OBJECT = TEXT
PUBLICATION_DATE = 2011-05-24
NOTE = "AAREADME File for re-organized IHW data set"
END_OBJECT = TEXT
Re-organized International Halley Watch (IHW) Data Sets
The original IHW HAL_0024 disk contained ground-based observations from
various networks ("nets" in IHW parlance) of comets Giacobini-Zinner and
Crommelin - both used as test targets by the IHW observers. These data on
Comet 27P/Crommelin, belonging to 18 individual data sets, were in a
separate subdirectory tree of the original volume. The data were sorted
into additional subdirectories by discipline network, but were not
otherwise separated by data set ID.
The data were ostensibly archived under PDS1 standards, but no catalog
files or labels were included on the disk. The information in the PDS
catalog database is very generic and nearly identical for each data set in
this collection. Users interested in the individual observations would
likely get more useful information from the published IHW books and
papers. The catalog files provided here were dumped from the PDS catalog
database but not otherwise altered except to correct the target, which was
incorrectly listed as Comet 1P/Halley prior to this reorganization effort.
The reorganization effort sought to separate the data files constituting
the unique data sets into a more contemporary, single-data-set-per-volume
format for ease of access and distribution. The data are subdivided into
directories by date, unless the number of observations is small enough
that such a division did not seem useful.
The data files and most supporting files are presented here in their
original format, problematic though that might be.
The additional ancillary directories, including documentation, ephemerides
and such, are duplicated in their entirety in all the related separate
- A.C.Raugh, 2011-05-24