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VELFRAME

VELFRAME

Name


    VELFRAME

Purpose


    Converts radial velocities between Local Standard of Rest, Heliocentric and Galactocentric velocity frames.

Category


    Astro

Calling Sequence


    Result = VELFRAME(Coords)

Inputs


    Coords: 2-element vector of coordinates at which transformation is computed. Assumed
              to be decimal RA and Dec degrees unless /GALACTIC is specified.

Keyword Parameters


    GALACTIC: Input coordinates are in galactic coordinates rather than RA and Dec.
    VLSR: Input velocity in LSR frame.
    VHELIO: Input velocity in heliocentric frame.
    VGSR: Input velocity in Galactic standard of rest frame.
    FRAME: Output frame. One of 'LSR', 'HELIO' or 'GSR'.

Outputs


    Output radial velocity in desired frame, assuming no proper motion.

Example


    FIXME

Modification History


    Written by: Jeremy Bailin
    13 Sept 2011 Initial writing



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