SDSSMuNu¶

class pydl.pydlutils.coord.SDSSMuNu(*args, copy=True, representation_type=None, differential_type=None, **kwargs)[source]¶

Bases: BaseCoordinateFrame

SDSS Great Circle Coordinates

Parameters

muAngle: Angle corresponding to longitude measured along a stripe.
nuAngle: Angle corresponding to latitude measured perpendicular to a stripe.

Notes

Attributes

stripe: SDSS Stripe Number .
node: Node of the great circle with respect to the celestial equator. In SDSS, this is almost always RA = 95.0 degrees.
incl: Inclination of the great circle with respect to the celestial equator.
phi: Counter-clockwise position angle w.r.t. north for an arc in the +nu direction.

Attributes Summary

`default_differential`	Default representation for differential data (e.g., velocity)
`default_representation`	Default representation for position data
`frame_attributes`
`frame_specific_representation_info`	Mapping for frame-specific component names
`incl`
`name`
`node`
`stripe`

Attributes Documentation

default_differential¶: Default representation for differential data (e.g., velocity)

frame_attributes = {'node': <astropy.coordinates.attributes.QuantityAttribute object>, 'stripe': <astropy.coordinates.attributes.Attribute object>}¶

frame_specific_representation_info¶: Mapping for frame-specific component names