On Tue, 14 Dec 2004, David Berry wrote:
> This threw up some bugs in the handling of active units related to area
> and angle which have been fixed. An obvious extension would be to handle
> magnitudes in addition to flux density.
Yes. Magnitudes are going to be common...
>
> > Units of per unit area implies that aperture photometry returned from
> > photom/aperadd should take the multiplier into account when reporting the
> > answer...
>
> Thinking through a consistent approach to using FluxFrames within KAPPA
> and NDF may take a while. I think I should probably come back to this
> after completing the STC support.
>
STC probably. I assume that once SPLAT integrates FluxFrame into its VO
interoperability that people will finally think that it's worth sending an
announcement to an IVOA mailing list??? SpecView is the front runner not
because it is better than splat, but because there is no competition from
splat.
>
> > > > all our spectral line data are in corrected antenna temperature...
> > >
> > > Can you point me at a descrtiption of how to convert between antenna
> > > temperature and flux density?
> > >
> >
> > Kutner & Ulich is the canonical reference
> >
> > http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1981ApJ...250..341K&db_key=AST&high=40ab03d0f311582
>
> Moving on to this now... I seem to remember the specific antenna
> temperature definition you use is T_A^* (equation 14 in the paper), is
> that right?
>
Yes. T*A - corrected antenna temperature.
--
Tim Jenness
JAC software
http://www.jach.hawaii.edu/~timj
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