[fitsbits] Updated FITS-WCS visualisation page

A few weeks ago I announced a WWW page which uses the AST library to
draw an annotated coordinate grid for a given set of FITS-WCS header
cards. I have recently made some changes:

1) I have moved it to a different http server which hopefully will
give more reliable access to the page.

2) The form should now also function on Netscape version 4 browsers.

3) It will now display alternate axis descriptions in addition to the
primary axis descriptions.

4) AST recognised a number of non-standard or deprecated features in the
input FITS header, and can translate them into equivalent standard
FITS-WCS keywords. The form now has an option to allow these "normalised"
headers to be displayed.

5) The form also has an option to display the AST FrameSet corresponding
to the supplied headers.

6) I have added some more examples.

7) A number of bug fixes in AST have been incorporated into the page.

To access the page, go to:

http://www.starlink.ac.uk/ast/

and then go to the "FITS-WCS Plotting Demo" section.


David


----------------------------------------------------------------------
Dr David S. Berry )

STARLINK project | Centre for Astrophysics
(http://www.starlink.ac.uk/) | University of Central Lancashire
Rutherford Appleton Laboratory | PRESTON
DIDCOT | United Kingdom
United Kingdom | PR1 2HE
OX11 0QX Tel. 01772 893733
01257 273192

David Berry wrote:

A few weeks ago I announced a WWW page which uses the AST library to
draw an annotated coordinate grid for a given set of FITS-WCS header
cards. I have recently made some changes:

1) I have moved it to a different http server which hopefully will
give more reliable access to the page.

2) The form should now also function on Netscape version 4 browsers.

3) It will now display alternate axis descriptions in addition to the
primary axis descriptions.

4) AST recognised a number of non-standard or deprecated features in the
input FITS header, and can translate them into equivalent standard
FITS-WCS keywords. The form now has an option to allow these "normalised"
headers to be displayed.

5) The form also has an option to display the AST FrameSet corresponding
to the supplied headers.

6) I have added some more examples.

7) A number of bug fixes in AST have been incorporated into the page.

To access the page, go to:

http://www.starlink.ac.uk/ast/

and then go to the "FITS-WCS Plotting Demo" section.


David




Why does your ICRS example have an EQUINOX keyword?

Pete.

David Berry wrote:

A few weeks ago I announced a WWW page which uses the AST library to
draw an annotated coordinate grid for a given set of FITS-WCS header
cards. I have recently made some changes:

1) I have moved it to a different http server which hopefully will
give more reliable access to the page.

2) The form should now also function on Netscape version 4 browsers.

3) It will now display alternate axis descriptions in addition to the
primary axis descriptions.

4) AST recognised a number of non-standard or deprecated features in the
input FITS header, and can translate them into equivalent standard
FITS-WCS keywords. The form now has an option to allow these "normalised"
headers to be displayed.

5) The form also has an option to display the AST FrameSet corresponding
to the supplied headers.

6) I have added some more examples.

7) A number of bug fixes in AST have been incorporated into the page.

To access the page, go to:

http://www.starlink.ac.uk/ast/

and then go to the "FITS-WCS Plotting Demo" section.


David




Why does your ICRS example have an EQUINOX keyword?

Pete.

Peter,
Fairly predictable answer - because it was based on an earlier FK5
example and the Equinox keyword slipped past the censor. Thanks for
pointing this out, I've now removed it.

Note though that, if you choose the option to display the "normalised"
output header (using the original incorrect header as input), you will see
that AST correctly filters out the irrelevant Equinox keyword when writing
a new FITS-WCS ICRS header.

David

On Wed, 17 Mar 2004, Peter Bunclark wrote:



David Berry wrote:

A few weeks ago I announced a WWW page which uses the AST library to
draw an annotated coordinate grid for a given set of FITS-WCS header
cards. I have recently made some changes:

1) I have moved it to a different http server which hopefully will
give more reliable access to the page.

2) The form should now also function on Netscape version 4 browsers.

3) It will now display alternate axis descriptions in addition to the
primary axis descriptions.

4) AST recognised a number of non-standard or deprecated features in the
input FITS header, and can translate them into equivalent standard
FITS-WCS keywords. The form now has an option to allow these "normalised"
headers to be displayed.

5) The form also has an option to display the AST FrameSet corresponding
to the supplied headers.

6) I have added some more examples.

7) A number of bug fixes in AST have been incorporated into the page.

To access the page, go to:

http://www.starlink.ac.uk/ast/

and then go to the "FITS-WCS Plotting Demo" section.


David




Why does your ICRS example have an EQUINOX keyword?

Pete.

_______________________________________________
fitsbits mailing list

http://listmgr.cv.nrao.edu/mailman/listinfo/fitsbits


----------------------------------------------------------------------
Dr David S. Berry )

STARLINK project | Centre for Astrophysics
(http://www.starlink.ac.uk/) | University of Central Lancashire
Rutherford Appleton Laboratory | PRESTON
DIDCOT | United Kingdom
United Kingdom | PR1 2HE
OX11 0QX Tel. 01772 893733
01257 273192

Peter,
Fairly predictable answer - because it was based on an earlier FK5
example and the Equinox keyword slipped past the censor. Thanks for
pointing this out, I've now removed it.

Note though that, if you choose the option to display the "normalised"
output header (using the original incorrect header as input), you will see
that AST correctly filters out the irrelevant Equinox keyword when writing
a new FITS-WCS ICRS header.

David

On Wed, 17 Mar 2004, Peter Bunclark wrote:



David Berry wrote:

A few weeks ago I announced a WWW page which uses the AST library to
draw an annotated coordinate grid for a given set of FITS-WCS header
cards. I have recently made some changes:

1) I have moved it to a different http server which hopefully will
give more reliable access to the page.

2) The form should now also function on Netscape version 4 browsers.

3) It will now display alternate axis descriptions in addition to the
primary axis descriptions.

4) AST recognised a number of non-standard or deprecated features in the
input FITS header, and can translate them into equivalent standard
FITS-WCS keywords. The form now has an option to allow these "normalised"
headers to be displayed.

5) The form also has an option to display the AST FrameSet corresponding
to the supplied headers.

6) I have added some more examples.

7) A number of bug fixes in AST have been incorporated into the page.

To access the page, go to:

http://www.starlink.ac.uk/ast/

and then go to the "FITS-WCS Plotting Demo" section.


David




Why does your ICRS example have an EQUINOX keyword?

Pete.

_______________________________________________
fitsbits mailing list

http://listmgr.cv.nrao.edu/mailman/listinfo/fitsbits


----------------------------------------------------------------------
Dr David S. Berry )

STARLINK project | Centre for Astrophysics
(http://www.starlink.ac.uk/) | University of Central Lancashire
Rutherford Appleton Laboratory | PRESTON
DIDCOT | United Kingdom
United Kingdom | PR1 2HE
OX11 0QX Tel. 01772 893733
01257 273192