Byte pos.

# bytes

Value

0

2

Number of frames

2

2

Columns in frame

4

2

Rows in frame

6

2

Maximum frames

8

2

Size of frame header (bytes) = 136

10

2

MVI version number = 6

12

2

Size of file header (bytes) = 810

14

2

IDL X-coord of sun center * 10

16

2

IDL Y-coord of sun center * 10

18

2

Platescale * 100 (arcsec)

20

2

R-Theta movie flag (1 or 0)

22

2

R (bottom) (pixels*10)

24

2

R (top)

26

2

Theta (left position angle) (degrees*10)

28

2

Theta (right)

30

2

Rectified flag

32

2

TrueColor flag

34

8

Subfield coordinates [r1row,r1col,r2row,r2col]

42

256

Red color table vector

298

256

Green color table vector

554

256

Blue color table vector

END FILE HEADER - START FRAME HEADERS

(+810 +136*i)

Where i=frame number

0

15

DATE-OBS (char)

15

15

TIME-OBS (char)

30

25

hdr.FILENAME / frame name (char)

55

10

hdr FILTER (char)

65

10

WAVELNGTH/SECTOR/POLAR (char)

75

10

DETECTOR (char)

85

10

IDL X-coord of sun center (char)

95

10

IDL Y-coord of sun center (char)

105

10

Platescale (char)

115

10

Solar radius in arcsec (char)

125

11

Roll from solar north in degrees (char)

END FRAME HEADERS - START IMAGE DATA

(+810 +136*n +j*c*r*t)

Where n=number of frames, c=number of columns in frame, r=number of rows, t=3 if truecolor, else t=1

0

c*r*t

Image data