DISA_LO72: Lowell 72in Observations of 9P/Tempel 1

This volume contains broadband R images and derived photometry of comet 9P/Tempel 1. The images were obtained by Marc Buie using the 72-inch Perkins telescope at Lowell Observatory over the period 28 Sep 200 to 14 Jan 2001.

Because the full set of images is so large (about 3.5Gb), a sample of the full data set is provided below for downloading. This ZIP file contains the full set of documentation, catalog, index, calibration and photometric results file. However, only three days of raw and reduced FITS files are included. These dates are 2000-09-28, 2000-11-19 and 2001-01-14 (the first date, the last date, and a date from about the middle). If you would like to see raw or reduced data from a different date, or would prefer to have the entire data set, please contact Anne Raugh (userid raugh at astro.umd.edu).

• ZIP file of all support and result files, but only samples of raw and reduced images (430 Mb), for downloading
• Tar file of the same data (bigger, but much faster to unpack than unzipping compressed FITS files) (640Mb)

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/ subdirectory. The directory contents are described by the catinfo.txt file.

• Lowell 72-inch Telescope Catalog File
• CCD Instrument Catalog File
• Data Set Catalog File
• References Catalog File
• Personnel Catalog File
• Comet 9P/Tempel 1 Catalog File

  Target catalog files are also provided for the calibration targets in this data set, mainly to fulfill PDS requirements. These can be found in the target subdirectory.

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/ subdirectory. The directory contents are described by the docinfo.txt file.

The documentation files provided are divided into subdirectories by type, and in each case the file names begin with the relevant observing date:

• JPEG finder charts are located in the finders subdirectory. The finder_charts.lbl file describes their contents.
• JPEG scans of hand-written observing logs arelocated in the obslogs subdirectory. The obs_logs.lbl file provides a brief description.
• ASCII files containing the photometry log tables are in the results/photometry_log subdirectory. The photometry_logs.lbl label file provides details of the contents of the various files.
• Notes and standard star lists are provided in ASCII text files in the photometry_notes subdirectory, with a brief description in the photometry_notes.lbl label file.

Data Files

The data directory is divided into three subdirectories:

• data/raw contains the raw FITS files, further divided by date of observation.
• data/reduced contains the reduced FITS images, also divided by date of observation.
• data/results contains ASCII tables of photometric measurements; one file for each observation date. Each table has an accompanying PDS label file (same name, .lbl extension).

Index Files

Theindex/ directory contains indices into the data files included in this data set.

• indxinfo.txt describes the directory contents.
• index.tab is a CSV file containing the required PDS index table. (PDS label)
• imageidx.tab is a supplemental index for scientists which includes many more observational parameters than the index.tab file. This table is also in CSV format (PDS label).

Comments Already Received

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