Table 9.

Table of measured stray light rejection for 100 mm zoom position

Position	Total signal [DN]a	Integration time [ms]	Thermal signal [DN]b	Rejectionc
Az: 10∘, El: 0∘	200	50	.6	1.8e-5
Az: 20∘, El: 0∘	15	50	.6	1.2e-6
Az: 30∘, El: 0∘	0.7d	50	.6	<6e-8e
Az: − 20∘, El: 0∘	200	50	.6	1.8e-5
Az: − 20∘, El: 20∘	1450	10000	124	6e-8

^aUnless otherwise noted, the measured signal is approximated as the respective Mastcam-Z’s estimate maximum value of the bias corrected frame

^bThermal signal is approximated from the dark current reported in Sect. 3.3.2

^cRejection is calculated as the ratio of the measured signal in [DN/ms] to the measured signal of the collimator: 226500 DN/ms

^dAs no structure was observed in the frame to select a maximum, the frame average is used

^eAs the signal is consistent with the thermal noise, we place a limit of the rejection percentage to be less than that generated by thermal noise alone