T0 : extensions to em, obs, spect, instr

[Pierre Didelon]

Hi,

Frederic V. "Rick" Hessman wrote:

> 1. I suggest we rename em from "electromagnetic spectrum" to "emission"  
electromagnetic spectrum can concern absorption!
> and add
> 
>         em.grav-wave            (gravitational wave)
>         em.neutrino            (neutrino)
> 
>     Alternatively, add
> 
>         phys.grav-wave            (gravitational wave)
>         phys.particle                (particle emission)
>         phys.particle.cosmic-ray

>         phys.particle.neutrino
why not electron, proton, neutron....
UCD must define preferentially concept I suppose, isn't it?
Enumerated lists must be handle with other mechanisms!
Keyword (<=>UCD) and the corresponding values...Y/N?
>         ...?
> 
> 2. I suggest we add UCD's for describing calibration observations.   
> Presently, they are
>     few mentions of calibrations at all in the official list:
> 
>         instr.calib                (calibration parameter)
>         phot.calib                (photometric calibration)
> 
>     and they are sorely needed for things like VOEvent and RTML.
> 
>     It's trivial to say that there's a big different between 
> calibrations  (see above) and calibration
>     observations, so new UCD's are needed and it seems the likely  
> candidates would be:
> 
>         obs.calib                (calibration observation)
>         obs.calib.dome-flat        (dome-flat observation)
>         obs.calib.flux            (flux calibration observation)
>         obs.calib.freq            (frequency calibration observation)
>         obs.calib.guide-star        (guide-star observation, e.g. for 
> intial setup)
>         obs.calib.phot            (photometric calibration observation)
>         obs.calib.pos            (astrometric calibration observation
>         obs.calib.sky-flat        (sky-flat observation)
>         obs.calib.slit-mask        (slit-mask calibration observation)
>         obs.calib.spect            (spectral type calibration observation)
>         obs.calib.veloc            (radial velocity calibration 
> observation, e.g.  standard star)
>         obs.calib.wl            (wavelength calibration observation)
Looks like you are trying to define a data model for observation
and data reduction with UCD... which is perhaps not the best way to go?
> 
>     For completeness, one should then also add
> 
>         phot.calib.flux            (photometric flux calibration)
>         phot.calib.mag            (photometric magnitude calibration)
>         pos.calib                (astrometric calibration)
>         spect.calib            (spectroscopic calibration)
>         spect.calib.wl            (" " in wavelength)
>         spect.calib.freq            (" " in frequency)
> 
> 3. Suggested addition to spect (Spectroscopy)
> 
>         spect.cont                (spectral continuum)
I like it (personnaly), but why not then spect.background....
> 
>     We already have spect.line.
> 
> 
> Rick
> 
> ------------------------------------------------------------------------ 
> ------------------------
> Dr. Frederic V. Hessman      Hessman at Astro.physik.Uni-Goettingen.DE
> Universitaets-Sternwarte     Tel.  +49-551-39-5052
> Geismarlandstr. 11                Fax +49-551-39-5043
> 37083 Goettingen                 http://www.uni-sw.gwdg.de/~hessman
> ------------------------------------------------------------------------ 
> -------------------------
> MONET: a MOnitoring NEtwork of Telescopes
> http://monet.uni-goettingen.de
> ------------------------------------------------------------------------ 
> -------------------------
> 

-- 
Pierre
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