[fitsbits] INSTRUME, TELESCOP, etc.

[William Thompson]

I was reviewing a document suggesting keywords to be used in FITS headers, and I 
was wondering if there was any kind of defacto standard beyond that in the FITS 
definition.  The keywords being suggested were as follows

	INSTRUME	FITS Standard
	TELESCOP	FITS Standard

	DETECTOR	The detector used
	INSTITUT	The institution
	OBSERVAT	The observatory
	NETWORK		I think this keyword is meant to be used for data taken 				by a 
network of observatories, such as the GONG network.

Except for the first two, which are standard FITS keywords, are any of the other 
keywords used elsewhere?  Or are their other forms which capture the same concepts?

Thank you,

William Thompson