IHW Selected Data

Selected Data from the International Halley Watch (IHW) Archive

This directory contains some of the summary files from the 26-CDROM set produced by the IHW. Although generated as part of the index to the ground-based observations, these files also contain the collected data, in chronological order.

Each dataset consists of an ASCII data file and a PDS label file. The PDS label provides a very brief description of the data format. It includes a column title, printing format, units (where known), start byte and character count.

Ground-Based Datasets

Astrometry

• 1986 Apparition
  • data, 770525 bytes
  • PDS label
• 1909-11 Apparition
  • ancient ephemeris, 612256 bytes
  • PDS label
• 1835-36 Apparition
  • ancient ephemeris, 57038 bytes
  • PDS label

Infrared Observations

• IR Photometry
  • data, 323988 bytes
  • PDS label
• IR Polarimetry
  • data, 6811 bytes
  • PDS label

Photometry & Polarimetry

• Narrow-Band Photometry
  Please note: This file has had numerous corrections applied to the data. Consequently, values in some of the records may not correspond exactly to those in the source files in the original IHW archive set of disks. The corrected files will be included in an errata disk, currently in preparation.
  • flux data, 2570805 bytes
  • PDS label
  In addition, summary data are available for 52 files to be included in the Addendum disk, currently in preparation:
  • flux data, 7280 bytes
  • PDS label
• Broad-Band Photometry
  • magnitude data, 461202 bytes
  • PDS label
• Polarimetry
  • data, 113552 bytes
  • PDS label
• Stokes Parameters
  • data, 21516 bytes
  • PDS label

Radio Science

• Continuum
  • data, 13871 bytes
  • PDS label
• Spectral Lines (non-OH)
  • data, 315666 bytes
  • PDS label

The Amateur Observer Network

• Visual Magnitudes
  • data, 1850919 bytes
  • PDS label

Get Back

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Last update: 09 April 2004, sam.