***** File CALINFO.TXT
This directory contains compressed digital calibration data associated
with some of the Halley images obtained by the Large-Scale Phenomena Network.
Text tables linking calibration and Halley files are given in the file
CALIB.TXT in the DOCUMENT subdirectory, and a delimited index of the same
information is in the file CALIB.IDX in the INDEX subdirectory. [N.B.: most,
but not all calibration data are contained in separate files; some are
deposited on the Halley images themselves. Refer to the last section of
CALIB.TXT.]
The type of calibration varies: there are sensitometer spots, step
wedges, and standard stars, depending on what was provided by the original
observers. FITS headers provide all of the known information about the
calibration data sets, although in some cases no relative intensities for
(e.g.) step wedges were provided by the observers. A previous pixel
compression technique was used on the calibration data in this directory and
on the full-resolution Halley images in directory Cyymmmdd; refer to the file
COMPRESS.TXT in the DOCUMENT subdirectory for specific details on compression.
A full description of the calibration data themselves is given in CALIB.TXT,
also in the DOCUMENT subdirectory.
The extensions for files of calibration data follow the IHW filename
conventions (.IMQ = compressed image, .HDR = header, .LBL = label). To
reconstruct the original FITS byte stream, the .HDR and the .IMQ files for the
appropriate observation must be concatenated. The original FITS headers have
been modified using the FITS extensions to take account of the fact that the
data have been compressed.
Name Last modified Size Description
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Parent Directory -
![[TXT]](/icons/text.gif)
calinfo.txt 04-May-1990 05:45 2.3K
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lspn4039.hdr 07-Jan-1990 08:47 8.4K [FITS header]
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lspn4039.imq 07-Jan-1990 08:47 11K
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lspn4039.lbl 30-Apr-1990 05:45 1.6K [PDS label]
lspn4040.hdr 07-Jan-1990 08:47 8.4K [FITS header]
lspn4040.imq 07-Jan-1990 08:47 11K
lspn4040.lbl 30-Apr-1990 05:45 1.6K [PDS label]
lspn4041.hdr 07-Jan-1990 08:47 8.4K [FITS header]
lspn4041.imq 07-Jan-1990 08:47 11K
lspn4041.lbl 30-Apr-1990 05:45 1.6K [PDS label]
lspn4042.hdr 07-Jan-1990 08:47 8.4K [FITS header]
lspn4042.imq 07-Jan-1990 08:47 11K
lspn4042.lbl 30-Apr-1990 05:45 1.6K [PDS label]
lspn4043.hdr 07-Jan-1990 08:47 11K [FITS header]
lspn4043.imq 07-Jan-1990 08:49 4.0M
lspn4043.lbl 30-Apr-1990 05:45 1.6K [PDS label]
lspn4044.hdr 07-Jan-1990 08:49 8.4K [FITS header]
lspn4044.imq 07-Jan-1990 08:49 11K
lspn4044.lbl 30-Apr-1990 05:45 1.6K [PDS label]
lspn4045.hdr 07-Jan-1990 08:49 8.4K [FITS header]
lspn4045.imq 07-Jan-1990 08:49 11K
lspn4045.lbl 30-Apr-1990 05:45 1.6K [PDS label]
lspn4046.hdr 07-Jan-1990 08:49 8.4K [FITS header]
lspn4046.imq 07-Jan-1990 08:49 11K
lspn4046.lbl 30-Apr-1990 05:45 1.6K [PDS label]
lspn4047.hdr 07-Jan-1990 08:49 8.4K [FITS header]
lspn4047.imq 07-Jan-1990 08:49 11K
lspn4047.lbl 30-Apr-1990 05:45 1.6K [PDS label]
lspn4048.hdr 07-Jan-1990 08:58 8.4K [FITS header]
lspn4048.imq 07-Jan-1990 08:58 31K
lspn4048.lbl 30-Apr-1990 05:45 1.6K [PDS label]
lspn4049.hdr 07-Jan-1990 08:58 8.4K [FITS header]
lspn4049.imq 07-Jan-1990 08:58 11K
lspn4049.lbl 30-Apr-1990 05:45 1.6K [PDS label]
lspn4050.hdr 07-Jan-1990 08:59 8.4K [FITS header]
lspn4050.imq 07-Jan-1990 08:59 11K
lspn4050.lbl 30-Apr-1990 05:45 1.6K [PDS label]
lspn4051.hdr 07-Jan-1990 08:59 8.4K [FITS header]
lspn4051.imq 07-Jan-1990 08:59 11K
lspn4051.lbl 30-Apr-1990 05:45 1.6K [PDS label]
lspn4052.hdr 07-Jan-1990 08:59 8.4K [FITS header]
lspn4052.imq 07-Jan-1990 08:59 11K
lspn4052.lbl 30-Apr-1990 05:45 1.6K [PDS label]
lspn4053.hdr 07-Jan-1990 08:59 11K [FITS header]
lspn4053.imq 07-Jan-1990 08:59 39K
lspn4053.lbl 30-Apr-1990 05:45 1.6K [PDS label]
lspn4054.hdr 07-Jan-1990 08:59 8.4K [FITS header]
lspn4054.imq 07-Jan-1990 08:59 34K
lspn4054.lbl 30-Apr-1990 05:45 1.6K [PDS label]
lspn4055.hdr 07-Jan-1990 08:59 11K [FITS header]
lspn4055.imq 07-Jan-1990 09:00 4.0M
lspn4055.lbl 30-Apr-1990 05:45 1.6K [PDS label]
lspn4056.hdr 07-Jan-1990 09:00 11K [FITS header]
lspn4056.imq 07-Jan-1990 09:02 4.0M
lspn4056.lbl 30-Apr-1990 05:45 1.6K [PDS label]
lspn4057.hdr 07-Jan-1990 09:02 11K [FITS header]
lspn4057.imq 07-Jan-1990 09:03 2.0M
lspn4057.lbl 30-Apr-1990 05:45 1.6K [PDS label]
lspn4058.hdr 07-Jan-1990 09:03 8.4K [FITS header]
lspn4058.imq 07-Jan-1990 09:03 11K
lspn4058.lbl 30-Apr-1990 05:45 1.6K [PDS label]
lspn4059.hdr 07-Jan-1990 09:03 8.4K [FITS header]
lspn4059.imq 07-Jan-1990 09:03 11K
lspn4059.lbl 30-Apr-1990 05:45 1.6K [PDS label]
lspn4060.hdr 07-Jan-1990 09:03 8.4K [FITS header]
lspn4060.imq 07-Jan-1990 09:03 11K
lspn4060.lbl 30-Apr-1990 05:45 1.6K [PDS label]
lspn4061.hdr 07-Jan-1990 09:03 8.4K [FITS header]
lspn4061.imq 07-Jan-1990 09:03 11K
lspn4061.lbl 30-Apr-1990 05:45 1.6K [PDS label]
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