VOX	A	Image_Title	---	description of the image source
VOX	A	Image_MJDateObs	d	Julian date of the observation
VOX	A	Image_Naxes	---	number of image axes
VOX	A	Image_Naxis	pix	length in pixels of each image axis
VOX	A	Image_Scale	deg/pix	scale of each image axis
VOX	A	Image_Format	---	MIME-type of the image file
VOX	A	STC_CoordRefFrame	---	coordinate system reference frame
VOX	A	STC_CoordEquinox	y	equinox
VOX	A	WCS_CoordProjection	---	type of celestial projection
VOX	A	WCS_CoordRefPixel	pix	pixel coordinates of the WCS reference pixel
VOX	A	WCS_CoordRefValue	deg	world coordinates of the WCS reference pixel
VOX	A	WCS_CDMatrix	---	WCS CD matrix element
VOX	A	BandPass_ID	---	bandpass name
VOX	A	BandPass_Unit	---	units
VOX	A	BandPass_RefValue	um	characteristic (reference) frequency, wavelength, or energy for the bandpass model
VOX	A	BandPass_HiLimit	um	upper limit of the bandpass.
VOX	A	BandPass_LoLimit	um	lower limit of the bandpass
VOX	A	Image_PixFlags	---	type of processing done by the image service 
VOX	A	Image_AccessReference	---	URL link
VOX	A	Image_AccessRefTTL	s	file lifetime
VOX	A	Image_FileSize	byte	actual or estimated size of the encoded image in bytes