[Issues] using external SourceLists

[Ewout M. Helmich]

Hi Johannes,

Please note that Kor has days off today and tomorrow, so he probably 
won't answer before Monday.

The WCS information is needed to derive the bounding box of the sources 
in the SourceList; for query purposes these attributes of SourceList:

llRA                = persistent('Right Ascension of lower left 
containing box [deg]', float, 0.0)
llDEC               = persistent('Declination of lower left containing 
box [deg]', float, 0.0)
lrRA                = persistent('Right Ascension of lower right 
containingbox [deg]', float, 0.0)
lrDEC               = persistent('Declination of lower right containing 
box[deg]', float, 0.0)
ulRA                = persistent('Right Ascension of upper left 
containing box [deg]', float, 0.0)
ulDEC               = persistent('Declination of upperer left containing 
box [deg]', float, 0.0)
urRA                = persistent('Right Ascension of upper right 
containingbox [deg]', float, 0.0)
urDEC               = persistent('Declination of upper right containing 
box[deg]', float, 0.0)

 are set. To do this accurately apparently the projection is necessary.

Ewout



Johannes Koppenhoefer wrote:
> Hello,
>
> I tried to create a SourceList from an external LDAC/FITS catalog following the instructions in the manual on page 183 and using the AWBASE code.
> It seems the method make_sourcelist_from_catalog() needs wcs information. Why is that, since the list already has ALPHA_SKY and DELTA_SKY?
>
> Bye,
> Johannes
>
>
> awe> sl=SourceList()
> awe> sl.catalog = 'variables.fits'
> awe> sl.make_sourcelist_from_catalog()
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
>   File "/usr/local/scipck/astrowise/opipe/AWBASE/astro/main/SourceList.py", line 766, in make_sourcelist_from_catalog
>     make_sourcelist_from_catalog creates a SourceList from a catalog created
>   File "/usr/local/scipck/astrowise/opipe/AWBASE/astro/main/SourceList.py", line 496, in set_coordinate_ranges
>
>   File "/usr/local/scipck/astrowise/opipe/AWBASE/astro/main/SourceList.py", line 1981, in get_projection_from_cat
>     cdelt1 = cdelt2 = crota2 = None
> Exception: Not enough Coordinate System Information in header (CD, CDELT, CROTA)!
>
> _______________________________________________
> Issues mailing list
> Issues at astro-wise.org
> http://listman.astro-wise.org/mailman/listinfo/issues
>   

-- 
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Drs. Ewout Helmich		<><>
Kapteyn Astronomical Institute	<><> Astro-WISE/OmegaCEN
Landleven 12			<><>
P.O.Box 800			<><> email: helmich at astro.rug.nl
9700 AV Groningen		<><> tel  : +31(0)503634548
The Netherlands			<><>
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=