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DefB1950 - Use FK4 B1950 as defaults?   

Description:
This attribute is a boolean value which specifies a default equinox and reference frame to use when reading a FrameSet from a FitsChan with a foreign (i.e. non-native) encoding. It is only used if the FITS header contains no information about the reference frame or equinox. If this is the case, then values of FK4 and B1950 are assumed if the DefB1950 attribute has a non-zero value (the default), and FK5 J2000 is assumed if DefB1950 is zero.

Type:
Integer (boolean).

Class Applicability:
FitsChan
All FitsChans have this attribute.



next up previous
Next: Digits/Digits(axis) - Number of digits of precision
Up: AST Attribute Descriptions
Previous: Current - FrameSet current Frame index

AST A Library for Handling World Coordinate Systems in Astronomy
Starlink User Note 210
R.F. Warren-Smith & D.S. Berry
30th April 2003
E-mail:ussc@star.rl.ac.uk

Copyright (C) 2003 Central Laboratory of the Research Councils