relative fluxes

[Petr Skoda]

Very nice summary, Alberto !

>> (in this and other standards) is killing all our efforts.  We have to
>> be precise, and to provide clear and unambiguous (almost mathematical)
>> definitions, accompanied by a good set of real (as opposed to virtual)
>> examples (tutorials).

YES - Tutorials should be on high priority list


> What we most need now are *implementations*, with real data, of both
> SSA services and client applications which begin to use the information
> in the SpectrumDM.

YES - but I am (without examples) bit lost what should be there (in my 
service) and even "proper" (I hope so) implementation of ESO archive does 
not seem to contain all the DM . Another issue is for what kind of viewer 
should be all these done ;-) We have only SPLAT and VOSPEC and so I am 
limited by testing of interaction with SSA services here (and seldom in 
SpecView - but its another story).
I am afraid the scientist will not be delighted to read all proper DM info 
in VOT displayed in web browser ;-)

Another issue is that I can test the real SSA services with a difficulties
as the download of a number of spectra takes long time, some services do 
not answer and hang the VOspec or SPLAT.
All the servers should provide the spectral range cutout to realy give 
some ideas of real work with bunch of small spectra.

I am afraid the development of SSA services should go hand in hand with 
development of Applications (curently all seem to be only at the begining 
- we are happy to see 5 curves, but we do not know how to diplay properly 
1000 of them (stacking, paging, rejection of bad SNR...)
I am sorry to say we need to have on spectral tools same massive scale 
capabilities like in Aldin, VOPlot, TOPCat etc ........).

But what will be the driver for such development ? We have SDSS - well I 
would like to work somehow with 1000-to 10000 spectra (after preliminary 
selection crossidentification etc ....) this should be real VO spectral 
research (not being happy to plot 3 curves)....

Despite the lack of spectra archives in VO (as pointed by Alberto as well) 
we have already 20 mil spectra in Byurakan survey we will get much more 
from GAIA - (short low resolution) - has anybody asked the question - how 
the tool should look like to work with them ?

*************************************************************************
*  Petr Skoda                         Phone : +420-323-649201, ext. 361 * 
*  Stellar Department                         +420-323-620361           *
*  Astronomical Institute AS CR       Fax   : +420-323-620250           *
*  251 65 Ondrejov                    e-mail: skoda at sunstel.asu.cas.cz  *
*  Czech Republic                                                       *
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