Region definitions

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D.1 Region definitions

All regions lines will follow this general arrangement:

{shape} {additional parameter=value pairs}

The possible parameter/value pairs are described in more detail below. Note that most parameters beyond the shape and its coordinates can be defined globally.

Possible units for coordinates are:

sexagesimal, e.g. 18h12m24s for right ascension or -03.47.27.1 for declination
decimal degrees, e.g. 140.0342deg for both RA and Dec
radians, e.g. 2.37666rad for both RA and Dec
pixels, e.g. 204pix

Possible units of length are:

degrees, e.g. 23deg
arcminutes, e.g. 23arcmin
arcseconds, e.g. 23arcsec
radians, e.g. 0.00035rad
pixels, e.g. 23pix

Units must always be included when defining a region.

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