EllipseSkyRegion¶

class regions.EllipseSkyRegion(center, width, height, angle=<Quantity 0. deg>, meta=None, visual=None)[source]¶

An ellipse defined using sky coordinates.

Parameters:

centerSkyCoord: The position of the center of the ellipse.
widthQuantity: The width of the ellipse (before rotation) as an angle.
heightQuantity: The height of the ellipse (before rotation) as an angle.
angleQuantity, optional: The rotation angle of the ellipse, measured anti-clockwise. If set to zero (the default), the width axis is lined up with the longitude axis of the celestial coordinates.
metaRegionMeta or dict, optional: A dictionary that stores the meta attributes of the region.
visualRegionVisual or dict, optional: A dictionary that stores the visual meta attributes of the region.

Attributes Summary

`angle`	The rotation angle measured anti-clockwise as a `astropy.units.Quantity` angle.
`center`	The center position as a `astropy.coordinates.SkyCoord`.
`height`	The height of the ellipse (before rotation) as a `astropy.units.Quantity` angle.
`meta`	The meta attributes as a `RegionMeta`
`visual`	The visual attributes as a `RegionVisual`.
`width`	The width of the ellipse (before rotation) as a `astropy.units.Quantity` angle.

Methods Summary

Return the equivalent region defined in pixel coordinates.

Attributes Documentation

angle¶: The rotation angle measured anti-clockwise as a astropy.units.Quantity angle.

height¶: The height of the ellipse (before rotation) as a astropy.units.Quantity angle.

width¶: The width of the ellipse (before rotation) as a astropy.units.Quantity angle.

Methods Documentation

to_pixel(wcs)[source]¶

Return the equivalent region defined in pixel coordinates.

Parameters:

wcsWCS: The world coordinate system transformation to use to convert between sky and pixel coordinates.

Returns: