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SLA_SUPGAL - Supergalactic to Galactic   

ACTION:
Transformation from de Vaucouleurs supergalactic coordinates to IAU 1958 galactic coordinates.

CALL:
CALL sla_GALSUP (DL, DB, DSL, DSB)

GIVEN:

DSL,DSB D supergalactic longitude and latitude (radians)

RETURNED:

DL,DB D galactic longitude and latitude $[\,l^{I\!I},b^{I\!I}\,]$ (radians)

REFERENCES:
1.
de Vaucouleurs, de Vaucouleurs, & Corwin, Second Reference Catalogue of Bright Galaxies, U.Texas, p8.
2.
Systems & Applied Sciences Corp., documentation for the machine-readable version of the above catalogue, Contract NAS 5-26490.
(These two references give different values for the galactic longitude of the supergalactic origin. Both are wrong; the correct value is $l^{I\!I}=137.37$.)



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SLALIB --- Positional Astronomy Library
Starlink User Note 67
P. T. Wallace
12 October 1999
E-mail:ptw@star.rl.ac.uk