[fitsbits] DOI keyword usage for FITS? {External}

[jaffe]

Why not define an extension table "REFERENCES"?
This will allow multiple references to the same underlying data
as well as references to multiple data sets, e.g. calibration tables
used to reduce the current data.

A row in the table might include the following columns:

RELEVANCE  (To what does this reference refer.)
TYPE       (DOI,  ESO Archive, VIZIER ...)
REFERENCE  (specific link)
KEYWORDS   (necessary keys to find data in an archive)

..


You might include a keyword:
REFERENC =                       T
in the main header to indicate that the table exists.

As to DOI dropping links if you don't pay the rent, this reminds me of 
the
Dutch graveyard policy of disinterring the remains of deceased whose
relatives have not paid the rent and dumping them in a common bone pit.

However, it is absurd to think that any archive is eternal.  What
happens to astronomical literature links if Springer or IOPscience go 
bankrupt?


Walter

On 2023-08-04 09:43, Mark Calabretta via fitsbits wrote:
> Record-valued keywords, e.g. DPj and DQi as defined in WCS Paper IV,
> are multiply defined by design.
> 
> As the original FITS specification did not prohibit multiply defined
> keywords, the "once FITS always FITS" principle deems that they cannot
> subsequently be prohibited.
> 
> I see no reason not to allow multiply defined keywords, provided that 
> it
> is known in advance that a particular keyword may be multiply defined 
> so
> that header parsing software is prepared for the possibility.
> 
> Mark Calabretta
> 
> 
> 
> On Thu, 3 Aug 2023 17:18:33 +0000
> "Seaman, Robert Lewis - \(rseaman\) via fitsbits"
> <fitsbits at listmgr.nrao.edu> wrote:
> 
> That seems a bit dismissive of the whole notion of DOIs. Also,
> thoughts about duplicate keywords?
> 
> 
> The mandatory FITS keywords defined in this Standard must not appear
> more than once within a header. All other keywords that have a value
> should not appear more than once. If a keyword does appear multiple
> times with different values, then the value is indeterminate.
> 
> Rob
> 
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