minnow HEADAS help file

NAME

minnow

USAGE

minnow infile=<filename> outfile=<filename> time=<met>

DESCRIPTION

This tool samples an attitude file at a given time.

If the input attitude file has records surrounding the requested time, those records are interpolated to find the sampled attitude. Otherwise the two records nearest the requested time are extrapolated.

The user can set constraints on whether the sampled attitude will be

PARAMETERS

infile [filename]

Name of attitude file to sample.

outfile [filename]

Name of output attitude file or NONE. The special value NONE indicates that no output file is desired - that may be desirable since the selected attitude can be reported to the console. If created, this file will have an ATTITUDE extension with two records having times surrounding the requested time and the same selected attitude.

operation = SAMPLE

Operation to perform. Currently only the SAMPLE operation is supported.

time [real]

The time at which to sample the input attitude file [s].

(alignfile = NONE) [string]

The spacecraft alignment file. The special value NONE indicates that the default alignment is appropriate. The special value CALDB causes the calibration database to be queried for the alignment file.

(options = NONE) [string]

Options constraining output attitude. options is made up of comma-delimited strings. Allowable options are

	ANGLE_d=<real>
		constrain separation angle for using reference attitude
	OFFSET_s=<real>
		constrain attitude record offset for using reference attitude
	AND
		boolean AND constraints
	OR
		boolean OR conditions
	OUTLIER
		only create outfile if sampled attitude is an outlier

(ra = 0) [real]

The reference Right Ascension [deg]. This parameter is only applicable in conjunction with options ANGLE_d.

(dec = 0) [real]

The reference Declination [deg]. This parameter is only applicable in conjunction with options ANGLE_d.

(roll = 0) [real]

The reference roll [deg]. This parameter is only applicable in conjunction with options ANGLE_d.

(clobber = NO) [boolean]

Overwrite existing output files?

(history = YES) [boolean]

Write parameter history?

(chatter = 1) [enumerated integer]

Standard HEAdas chatter parameter.

EXAMPLES

The following example illustrates running minnow specifying the parameters on the command line

      minnow infile=swobspat.fits outfile=sample.att alignfile=align.fits \
				chatter=3

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