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42.3 Correcting Times in PRISM and STAR-SKY Modes

In the PRISM and STAR-SKY modes, the read-beam had to be moved back and forth between different filter-aperture pairs. The data stream that is produced by the pipeline alternates between filter 1 and filter 2 or between star and sky. The actual relative times of each observation must be adjusted to account for the time required to move the read-beam between successive observations. This delay time, N, is a function of data format and can be computed from Table 42.1 below, which specifies N in units of 1/1,024,000 second for each data format and which gives the approximate corresponding delay time in msec, as well.

**Delay Time as a Function of Data -Format**
Data Format	Delay TIme (N)	Delay Time (msec)
BYTE	20,075	19.60
WORD	20,099	19.63
LONGWORD (LWRD)	20,119	19.65
ANALOG (ALOG)	20,300	19.82
ALL	20,157	19.68

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