FDS is the 7-digit Flight Data System counter specified as xxxxxyy where xxxxx is the Mod16 count and yy is the Mod60 count. See help file for details regarding simultaneous exposures.
The camera pointing can be corrected by specifying the object space line-sample coordinates of the target-center via the OSPC parameter. For images containing a significant portion of the limb, these coordinates may be derived via program NAV or measured directly off a print of the raw image. Note that the effect of the OSPC parameter is completely different from that of the C, UL, UR, etc. parameters. The OSPC parameter is used to correct the camera pointing whereas the latter merely change the location within the image where calculations are performed.
Changes location in image where calculations for C (normally center of image)
are performed.
e.g. photlist 1234567 C=(300,300)
where the coordinates are specified in image space
Changes location in image where calculations for UL (normally upper left
corner of image) are performed.
e.g. photlist 1234567 UL=(300,300)
where the coordinates are specified in image space
Changes location in image where calculations for UR (normally upper right
corner of image) are performed.
e.g. photlist 1234567 UR=(300,300)
where the coordinates are specified in image space
Changes location in image where calculations for LL (normally lower left
corner of image) are performed.
e.g. photlist 1234567 LL=(300,300)
where the coordinates are specified in image space
Changes location in image where calculations for LR (normally lower right
corner of image) are performed.
e.g. photlist 1234567 LR=(300,300)
where the coordinates are specified in image space
Defines additional points for PHOTLIST to report by specifying starting
point and incrementing values. The specification is (SL,SS,LINC,SINC) where
SL = Starting Line
SS = Starting Sample
LINC = Line increment
SINC = Sample increment
The incrementing is done UNTIL either the LINE or SAMP exceeds the boundary
points 1..800 or 1..800 respectively. (The UNTIL is empasized because initial
given point is not checked for the boundary)
Ex: GRID=(1,1,100,100)
-------> reports (1,1), (1,101), (1,201) ...(1,701)
(101,1),(101,101),(101,201)...(101,701)
(201,1),(201,101),(201,201)...(201,701)
.
.
(701,1),(701,101),(701,201)...(701,701)
in a left-right, then top to left order
if all are inside the target
GRID=(701,701,-100,-100)
-------> reports same as above but in reverse order (right-left,
botom-top) from the table presented above
if all are inside the target
GRID=(-50,100,100,200)
-------> reports (-50,100), (-50,300), (-50,500), (-50,700)
(50,100), (50,300), (50,500), (50,700)
.
.
(750,100), (750,300), (750,500), (750,700)
if all are inside the target (left-right, top-botom)
NOTE: The initial point is reported even if it's outside the
boundary. The boundary is not checked against -50 as
long as it is not incremented.
Specifies the coordinate system for user input of C, UL, UR, LL, LR
(all except PC)
LINESAMP - default, line/sample coordinate system of the geometrically
uncorrected image.
LATLON - latitude/longtitude coordinate system of the geometrically
corrected image.
Specifies source of desired camera pointing:
DAVI --Data determined by Mert Davies
NAV --Data determined by program NAV
FARE --Data determined by program FARENC
NAV2 --Data determined by program NAV2
NEAR --Data determined by program NEARENC
AMOS --Data determined by program AMOS
NAIF --Data determined by NAIF
SEDR --Original SEDR values
If this keyword is not specified, or if the specified source does not exist,
the camera pointing will be selected from the available sources, in the
following order of priority: (1) DAVI, (2) NAV, (3) FARE, (4) NAV2,
(5) NEAR, (6) AMOS, (7) predict or final SEDR.
Planet of encounter. The Voyager SEDR data is divided into separate files for each planet.
Specifies the IBIS Format Reseau file to be read for obtaining the Reseau locations of the image frame specifed by SCLK. The Reseau file can be master or one created by RESLOC as long as it has the Reseau locations for the image frame specifed by the SCLK. If this parameter is not given, the program uses the nominal values for the Reseau locations which means that the output will not be as accurate.