[daip] AIPS not reading FITS headers

[landon at inaoep.mx]

Hello again,

I am having trouble getting AIPS to properly import a FITS file. The header
includes these listings:

RESTFREQ=  1.1527120400000e+11                                                 
VELO-LSR=  4.2000000000000e+05                                                 
DELTAV  = -2.6044000000000e+03                                                 
CTYPE1  = 'FREQ    '                                                           
CRPIX1  =  4.1826555060700e+02                                                 
CRVAL1  =  1.1527120400000e+11                                                 
CDELT1  =  1.0000000000000e+06                                                 

When I load in the file, AIPS imports the first axis's information, but does not
import the alternate velocity definition for the axis. I used ALTDEF in AIPS to
try to set the alternate value with the following inputs:

AIPS 1: AXTYPE     'RAD LSR '              'OPT' or 'RAD' plus 'LSR',
AIPS 1:                                    'HEL', or 'OBS'
AIPS 1: AXVAL      420000         0        Velocity at (new) ref. pixel=
AIPS 1:                                    AXVAL(1) + AXVAL(2).
AIPS 1: AXREF         257                 Reference pixel location
AIPS 1: RESTFREQ   1.152E+11   7.120E+07   Rest frequency in HZ =
AIPS 1:                                    RESTFREQ(1) + RESTFREQ(2)

This set the Delta V value to somethimg different than the value in the FITS
header. 

It would be nice to have AIPS read in the entire FITS header properly, but
possibly the format of the header is not fully compatible with AIPS. This FITS
file is of dimensions (FREQ,RA,DEC)=(512,3,3) and is compiled from 9 single dish
observations from Onsula Radio Observatory.

Thanks for any tips you might have,
-Landon Halloran