San Pedro Martir BVRI Imaging of Comet 9P/Tempel 1

Status: Archived

This data set contains raw and reduced broadband BVRI images of comet 9P/Tempel 1 in support of the Deep Impact mission. The data were taken at the San Pedro Martir telescope, in Baja, Mexico, during half-nights on 2-5 July 2005 UT. Images were acquired about every 10 seconds around impact on 4 July and every 20 seconds at most other times.

The entire data set is over 5 GB in size. The data have been divided into seperate files by observation date and reduction level to make them marginally easier to download:

• Catalog, document, index, and supporting files (7.5 MB zip file)
• Raw data products:
  • 2 Jul 2005 (323 MB tar file)
  • 3 Jul 2005 (466 MB tar file)
  • 4 Jul 2005 (782 MB tar file)
  • 5 Jul 2005 (610 MB tar file)
• Reduced data products:
  • 2 Jul 2005 (423 MB tar file)
  • 3 Jul 2005 (766 MB tar file)
  • 4 Jul 2005 (1.3 GB tar file)
  • 5 Jul 2005 (1.1 GB tar file)

• MD5 checksums for the above files

An overview of the volume contents is provided in the aareadme.txt file.

Catalog Files

Catalog files contain the overview information and parameters used in loading the PDS central catalog, specifically, or for developing other interfaces to the data outside of PDS. The information they contain, particularly in their descriptive text fields, should be clear, complete, and understandable to a research user who is not necessarily a mission or instrument specialist.

These files are located in the catalog/ directory. The directory contents are described by the catinfo.txt file.

• Support Archives mission file
• Deep Impact mission file
• San Pedro Martir 1.5m Telescope instrument host file
• La Ruca SITE 1K CCD instrument file
• Data Set file
• 9P/Tempel 1 target file
• Calibration target file
• References file

Documentation Files

In addition to the small text files located throughout the volume to describe directory contents, some specific documents are provided to assist with understanding the data and processing involved. These files are located in the document/ directory. The directory contents are described by the docinfo.txt file.

Additional explanatory material about the observations has been provided in several separate documents:

• The direct imaging guide for the San Pedro Martir observatories is provided in dimanual.asc (ASCII, PDF, PDS label).
• A general telescope guide for the 1.5m telescope at San Pedro Martir is provided in man84_150.pdf (PDF, PDS label).
• A summarized observing log for all nights is provided in observinglog.asc (PDS label).
• A more detailed observing log for July 2 and 3 is available in nights1and2_logs.pdf (PDF, PDS label).
• A more detailed observing log for July 4 and 5 is available in nights3and4_logs.pdf (PDF, PDS label).
• A description of the data reduction steps is included in reductionnotes.asc (PDS label).
• The calibrated visible magnitudes of comet 9P/Tempel 1 from July 4-5, 2005 UT is included in the ASCII table oan_magnitudes.tab (PDS label).
• The photometry of comet 9P/Tempel 1 for July 4, 2005 is plotted in oan_photometry.jpg (PDS label).

In this directory you will also find ads.txt and its label which contains information for the ADS Abstract Service database.

Data Files

The data/ directory contains the raw and reduced images divided into two subdirectories, which are each further divided by sequential night. All data files are presented as FITS files with detached PDS labels.

• Raw data
  • 2 Jul 2005
  • 3 Jul 2005
  • 4 Jul 2005
  • 5 Jul 2005
• Reduced data
  • 2 Jul 2005
  • 3 Jul 2005
  • 4 Jul 2005
  • 5 Jul 2005

Index Files

The index/ directory contains the required PDS index into the files in the data directory, as well as the checksum file.

• indxinfo.txt describes the directory contents.
• index.tab is a CSV table meeting the PDS indexing requirements. (PDS label)
• checksum.tab is flat table of MD5 checksums for each file in the official archive volume except for itself and its PDS label.