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Subsections



D.14 ISO Star-Tracker Calibration Data (ISTR)

This file contains information on the operational Star-Tracker.

D.14.1 Primary header

The ISTR file contains a primary header with the fields described in Table D.34. In this example non-mandatory fields are filled with example values.

Table D.34: ISTR primary header.
Keyword Value Description
SIMPLE = T /
BITPIX = 8 /
NAXIS = 0 /
EXTEND = T /
ORIGIN = 'ESA ' / European Space Agency
TELESCOP = 'ISO ' / Infrared Space Observatory
COMMENT   ISO Star-Tracker calibration data
FILENAME = 'ISTR' / File name in ISO archive
DATE = '09/07/95' / Creation date
FILEVERS = '0298 ' / Version ID in ISO archive
OLPVERS = 'OLP_21 ' / SOC OLP system version
CALGVERS = 'CALG_31 ' / SOC OLP CAL-G files version
USERNAME = 'PIPELINE' /
DATE-OLD = '1997-07-14' / Date of original creation by IDT

D.14.2 Records

The ISTR file contains records described in Table D.29.

Table D.35: ISTR records.
Keyword Number Format Description
F 1 R8 Focal length, in metre
DFY 1 R8 Focal length fractional error Y-component
DFZ 1 R8 Focal length fractional error Z-component
X10 1 R8 FSS-Z misalignment parameter
DX10 1 R8 FSS-Z misalignment parameter error equivalent angle, in arcsec
STRX 1 R8 STR-X misalignment, in degrees
DSTRX 1 R8 STR-X misalignment error, in arcsec
REV 1 I4 Revolution after which the measurements apply
UTC 1 I4 UTC after which the measurements apply, in seconds since 1989.0
SPARE 16 I1 Spare space


next up previous contents index
Next: D.15 ORBIT Up: D. Satellite Files Previous: D.13 Instrument Reference Pointing
ISO Handbook Volume I (GEN), Version 2.0, SAI/2000-035/Dc