source	name	type	reference	Note	description
----	----	----	----	----	----
FITS_RES	DATE-OBS	time	FITS	MDI DATE-OBS is mean time as if at Earth.  See T_OBS	"The time and date of the start of the observation, in UT at the observatory or spacecraft, in CCSDS ASCII Calendar Segmented (ISO 8601). Example: 1988-01-18T17:20:43.123"
FITS_RES	DATE_OBS	time	SOHO	Not used	"DATE_OBS was DATE-OBS + EARTH_DT, i.e. time as if SOHO was at the center of the Earth.  For SDO same as DATE-OBS."
FITS_RES	DATE-END	time	FITS	"not used, DATE-OBS + EXPTIME"	
FITS_RES	EXPTIME	float			"The duration of the observation, in seconds (floating point). "
FITS_RES	TELESCOP	string	FITS		set to SDO
FITS_RES	INSTRUME	string	FITS		"one of HMI, HMI_V, HMI_M, AIA, AIA_xx where xx is 1,2,3,4 for camera number or code for wavelength, TBD"
FITS_RES	OBJ_ID	string	SSW		
FITS_RES	SCI_OBJ	string	SSW		
FITS_RES	OBSERVER	string	FITS		
FITS_RES	OBS_PROG	string	SSW		
FITS_RES	WAVELNTH	float	SSW		"HMI: 617.3, AIA: list options here."
FITS_RES	OBJECT	string	FITS		
FITS_RES	T_OBS	time	MDI	MDI DSDS data uses T_OBS same as DATE-OBS - EARTH_DT	"Same as DATE-OBS + EXPTIME/2.0, but may be corrected past level-0.  I.e. DATE-OBS will be the onboard time but T_OBS may be corrected if onboard time dirfts."