Next: Digits/Digits(axis) - Number of digits of precision
Up: AST Attribute Descriptions
Previous: Current - FrameSet current Frame index
- 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: 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 211
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