Name	Examplea	Description
filt	‘0’	Filter number 0-7
vflush	‘2047’	Num. charge-clearing vertical transfers before exposure
focus	‘2460’	Focus motor-count number
autoexposure	‘0’	Auto-exposure parameter (zero if not auto-exposed)
subsec	‘39’	Spacecraft clock fractional 1/256th of a second
compression[0]	‘0’	Companding table number
id	‘1’	GSE-assigned image ID
serno	‘173032’	System serial number
mech[1]	‘0’	Filter motor-count number (divisible by −294)
noteb	‘ISOP = 1.0079’	Arbitrary test noteb
initsize	‘3955264’	Initially allocated size of image in bytes
autofocus	‘0’	Auto-focus parameters (zero if not auto-focused)
status	‘1’	Instrument status
compression[1]	‘255’	Maximum pixel value (zero if not companded)
exposure	‘0.0’	Exposure time in milliseconds (divisible by 0.1)
sy	‘0’	Y-vertical start pixel (divisible by 16)
sx	‘0’	X-horizontal start pixel (divisible by 16)
sclk	‘610037823’	Spacecraft clock in epoch J2000.0 at start of exposure
dcoffset	‘110’	DC-offset pixel value subtracted from frame before companding
filter	‘0’	Filter number 0-7 (redundant with “filt”)
mech[2]	‘8652’	Zoom motor-count number (divisible by 6)
mech[0]	‘2460’	Focus motor-count number (divisible by 6, redundant with “focus”)
modec	‘9’	Camerahead mode used to read-out image
side	‘0’	Not used

^aThis example mini-header comes from the image “412TAMBR01_0001.png” in the “/cal1” folder

^bThe test “note” holds information like the integrating sphere out-put (ISOP) in $\mathrm{mW}/{\mathrm{cm}}^{2}sr\text{μm}$, the monochromator wavelength in nanometers (e.g. “WAVELENGTH = 500”), whether the cameras are looking through the TVAC window (e.g. “WINDOW = 1”), the calibration target name (e.g. “DOT40”, “MTF_SN007”, etc.), or the metrology measurement id (e.g. “METROLOGY = 001”)

^cThe “mode” parameter controls the camerahead clock speed and the video exposure mode, among other things. Mode 9 commands the clock to half-speed (20 MHz), while Mode 0 commands the clock to full speed (40 MHz)