[daip] KNTR

[Ian Pattison]

Hi,

I'm trying to overlay the contours from a radio map, on a grey scale image
of the same source, taken in the near-IR. The near-IR image was first
converted from sdf (ndf) to fits format then loaded using FITLD.

I tried using KNTR but get the error:

>KNTR 1: INPUT MAPS ARE NOT COINCIDENT: AXIS 1

The two headers are (radio then IR):

AIPS 1: Image=M33       (MA)         Filename=6(6)        .MA    .   1
AIPS 1: Telescope=VLA                Receiver=VLA
AIPS 1: Observer=AH768               User #=   60
AIPS 1: Observ. date=28-JAN-2002     Map date=05-DEC-2002
AIPS 1: Minimum=-1.11503970E-04      Maximum= 2.03197147E-03 JY/BEAM
AIPS 1: ----------------------------------------------------------------
AIPS 1: Type    Pixels   Coord value     at Pixel     Coord incr   Rotat
AIPS 1: RA---SIN    61    01 34 11.170   -1591.00      -0.087150    0.00
AIPS 1: DEC--SIN    61    30 40 55.700     124.00       0.087150    0.00
AIPS 1: FREQ         1   4.8601000E+09       1.00  4.3750000E+07    0.00
AIPS 1: STOKES       1   1.0000000E+00       1.00  1.0000000E+00    0.00
AIPS 1: ----------------------------------------------------------------
AIPS 1: Coordinate equinox 2000.00
AIPS 1: Map type=NORMAL              Number of iterations=      93
AIPS 1: Conv size= 0.46453 X 0.44500   Position angle=   3.67
AIPS 1: Observed RA   01 33 50.500    DEC  30 38 21.80
AIPS 1: Phase shifted in X    310.050  in Y    153.900
AIPS 1: Rest freq      0.000         Vel type: OPTICAL wrt YOU
AIPS 1: Alt ref. value  1.12500E+05  wrt pixel    1.00


and,

AIPS 1: Image=Output f  (MA)         Filename=Output f    .IMAP  .   1
AIPS 1: Telescope=UKIRT              Receiver=UFTI
AIPS 1: Observer=hoarem              User #=   60
AIPS 1: Observ. date=BAD DATE        Map date=15-DEC-2003
AIPS 1: Pixel type: FLOATING         Magic value blanking
AIPS 1: Minimum=-3.40282326E+38      Maximum= 7.89022156E+02
AIPS 1: ----------------------------------------------------------------
AIPS 1: Type    Pixels   Coord value     at Pixel     Coord incr   Rotat
AIPS 1: RA---TAN  1144    01 34 00.264     571.83      -0.091284    0.00
AIPS 1: DEC--TAN  1144    30 40 35.400     571.68       0.092453    0.99
AIPS 1: ----------------------------------------------------------------
AIPS 1: Coordinate equinox 2000.00


I did notice that the RA and DEC are in TAN projection, so I thought this 
could be the problem, and so I converted the data to SIN projection using 
REGRD. However I get the same message, when DOALIGN in KNTR is set to 1, 
i.e. asking to align images.

Any suggestions as to what I'm doing wrong?

Many Thanks,

Ian Pattison


-- 
******************************************
 Ian Pattison 

 Astrophysics Group 
 School of Physics & Astronomy
 University of Leeds
 LS2 9JT
 United Kingdom

 Tel: +44 (0)113 3433872
 email: ip at ast.leeds.ac.uk
 WWW: http://ast.leeds.ac.uk/~ip

******************************************