fits-keywords for STAROS database and SpcAudace

[Erik Bryssinck]

Hello,

I want to participate for the alpha Drac. observing campaign. These data must be submitted to the STAROS database. I use SpcAudace software for datareduction. By uploading the spectra, i get errormessage that several fits-keywords are not present. several keywords, which were not present I was able to solve myself.
But 2 of them: BSS_ITRP and JD_OBS are not in the FITS header.

Simular keyword BSS_ESRP is present for the resolution. I don't know what the difference is between BSS_ESRP and BSS_ITRP ?

How can BSS_ITRP and JD_OBS be added tot the fits header in SpcAudace ?

thanking n advance,
Erik

[Robin Leadbeater]

Hi Erik,

STAROS should not be asking for BSS_ITRP if BSS_ESRP is present

BSS_ESRP is the resolution measured in the actual spectrum
BSS_ITRP is the resolution given in the instrument description (which is added by BeSS if BSS_ESRP is not present)

From the definitions in the BeSS fits standard document

The FITS header should contain the real spectral resolution (in BSS_ESRP), and the wavelength
used for calculation (in BSS_SRPW). This value should be close to the typical resolution of
instrument (defined in the Instrument record). If the spectral resolution is significantly different
from the typical instrument resolution (e.g. if the spectrum has been binned), the reason /
method for binning should be given (in BSS_BINN).

If the real resolution is not given in the
header, BeSS will add in the spectrum header a separate keyword (BSS_ITRP) containing the
typical resolution of the instrument used to obtain the spectrum (as an indication).

[Robin Leadbeater]

JD_OBS is also not part of the BeSS standard and so is not defined. Only DATE_OBS is required in the BeSS standard so STAROS should be generating it from that if it is required.

I recommend contacting the STAROS team and asking them what standard they are using and why they are not using the BeSS standard

Robin

[Christian Buil]

The next update will offer greater flexibility. For example, BESS_ESPR will be optional. Please note, however, that it is primarily up to the software designers to ensure that the data produced is as compatible as possible with the analysis applications (BESS, STAROS, ...), and not the other way round.

Christian B

[Matthieu Le Lain]

Hi all,

Yes, I've listed (and update) the necessary keys on this page : https://alphadra.staros-projects.org/kn ... /start/how

I have update the application

The JD-OBS key was an error related to an old display on the title of a plot, i delete it.

As said Christian, for the resolution keys, I've changed the logic in relation to this standard and made them optional to avoid any blocking.

Thank you very much for these feedback, it helps to improve the platform.

Matthieu

[Robin Leadbeater]

The next update will offer greater flexibility. For example, BESS_ESPR will be optional. Please note, however, that it is primarily up to the software designers to ensure that the data produced is as compatible as possible with the analysis applications (BESS, STAROS, ...), and not the other way round.

Christian B

I strongly disagree. The database designers should makes sure that as far as possible it is compatible with existing standards. For example I can upload the same spectrum to AAVSO, ARAS,BeSS I do not want to have to change the header format for different databases. There is other software besides SpecInti Also there have been no standards published for the STAROS database so how is anyone supposed to know what is required?

Cheers
Robin

[Robin Leadbeater]

Hi all,

Yes, I've listed (and update) the necessary keys on this page : https://alphadra.staros-projects.org/kn ... /start/how

This is a start but it is not sufficient to define the header precisely. See the BeSS standard document for an example of how the header should be specified

The BeSS standard is not ideal and could be improved but changes should be done transparently and in agreement with other database operators and software suppliers, not unilaterally. (I already faced this problem with AAVSO who wanted to introduce a completely incompatible system)

Cheers
Robin

[Erik Bryssinck]

[quote="Matthieu Le Lain"]Hi all,

Yes, I've listed (and update) the necessary keys on this page : https://alphadra.staros-projects.org/kn ... /start/how


I uploaded again a spectrum and now with succes.

thank you for thinking with me and solving the problem !

best regards,
Erik

[Matthieu Le Lain]

Thanks Erik, I'm glad it's resolved.

Thanks also Robin, I'll work on it!

Matthieu