NAME

scc_to_utc -- convert from ROSAT space-craft clock to UTC

USAGE

scc_to_utc time

DESCRIPTION

scc_to_utc converts from ROSAT space-craft clock to coordinated universal time. The times are interpolated from a table that was derived from a list of SCC and UTC times. This task was ported from MIDAS/EXSAS.

PARAMETERS

scc_time = prompt = input spacecraft clock time

The input spacecraft clock time

(tbl_fname = "xtimingdata$scc_to_utc.tab" ) [string]

The table name containing the polynomial coefficents for the interpolation routine. This table DOES NOT contain the original SCC and UTC data points.

EXAMPLES

Convert SCC to UTC

cl> xray
xr> xtiming
xt> timcor
ti> scc_to_utc 
input spacecraft clock time: 10000000
 
SCC->UTC conversion table is calibrated to SCC 221516606.8437
 
SCC time = 10000000.0000000
UTC time (integer part) 2448160  (real part) 0.12047967551274

TIME REQUIREMENTS

BUGS

SEE ALSO