On Tue, 9 Oct 2007, Florentijn wrote:
> I am still trying to get automated astrometry working in my latest
> GAIA/Starlink release. I have been turning the system and the source
> code inside out and I cannot seem to find the problem...
>
> I load an observation I made from the Ring Nebula in Halpha into the
> system. I try to do an automated astrometric calibration. I try the
> "advanced" option with all the parameters set to match the observation:
>
> --I autoastrom, v0.6-0
> --I Running AUTOASTROM on
> /usr/local/data/astropics/20071007/gaia/m57-halpha-wcs.
> --I Using WCS information from USER-supplied coordinates.
> Central coordinates: 19:15:00.0 33:02:00.00
> Search radius: 17.4031 arcminutes
> --W Could not obtain filter by translating header.
> --W Looking for FILTER header keyword.
> --W Could not obtain filter from FILTER header keyword.
> --W Defaulting to J.
> --I Calling EXTRACTOR.
> Calling EXTRACTOR.
> --I Extracted 422 objects from NDF.
> --I Obtaining catalogue from [log in to unmask]
> Token %r2-out not currently recognized at
> /star/Perl/lib/perl5/site_perl/5.8.8/Starlink/Autoastrom.pm line 2278
> --I Obtained catalogue, 9181 entries, from [log in to unmask]
> --I Iteration 1...
> --I Matching position lists...
> Sizes of catalogues used as input to correlation:
> Image: 422
> Query: 500
> assertion fails in file atpmatch.c, line 1804
> Astro::Catalog - Cannot open catalogue file
> autoastrom_tmp/outfile29145.mtA: No such file or directory at
> /star/Perl/lib/perl5/site_perl/5.8.8/Astro/Catalog.pm line 914
Hi Florentijn,
you'll see that error when two of the supposed stars have the same
coordinates (so the distance between them is zero).
> I have been running the 'autoastrom' program from the command line with
> all the options tuned / changed etc. The strange thing is also that it
> does not interpret the RA correctly from the 18:53:00 I put in manually.
> This happens both on the commandline and in GAIA.
Don't understand either of these problems, could you point me at one of
your data files and the exact autoastrom command that you're using and
I'll try to understand what's going on (although clearly dealing with an
image of the ring nebula will be problematic when it comes to identifying
sources).
Regards,
Peter.
--
Peter W. Draper, http://star-www.dur.ac.uk/~pdraper
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