Fig. 3.

image

Limiting factors for STIX energy range. The transmission through the STIX windows (front and rear combined) is shown in the top panel with (red) and without (black) the attenuator inserted. The effect of grid transparency on the measurement of visibilities is shown in the second panel as the “grid efficiency” while the probability of detection is shown in the third. Bottom panel: resulting combined imaging efficiency with and without attenuator.

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