All flight dark current data was taken in Gain State 3 (unshuttered images with integration times from 0 seconds to 20 minutes). WAC FM Gain State 2 bias data ( 0 second exposure time) was compared to the Gain State 3 bias data with the intent to correlate the two sets of data via the gain ratio. This dark current data was needed for light transfer curve data evaluation which was taken in Gain State 2. A delta of approximately 1 DN was seen with the comparison (see Figure 2.6-1) .
Figure 2.6-1 - Gain 2 to Gain 3 Dark Frame Comparison Profile Plot