|STIS Instrument Handbook for Cycle 26|
The F25CIII filter with the NUV-MAMA provides narrow band imaging of the C III] 1907 + 1909 Å feature.
Pivot λ (Å) Speak Bλ R80 (arcsec) Table 14.22: F25CIII NUV-MAMA Sensitivity & Throughput
Figure 14.56: Point Source S/N vs. V+ABν for the F25CIII NUV-MAMA mode. Curves are labeled by required exposure time (seconds).Figure 14.57: Extended Source S/N vs. V+ABν for the F25CIII NUV-MAMA mode. Top curves are for an area of 0.2 arcsec2; bottom curves are for 1 arcsec2. Average sky assumed. Curves are labeled by required exposure time (seconds).
Figure 14.58: Point Source PSF for F25CIII NUV-MAMA, 7."5 square (at pixel 741,402, log scaled, B-V=-0.04). Note PSF ghost ~45 pixels left of peak and a few 10-3 of the peakFigure 14.59: Point Source Encircled Energy for F25CIII NUV-MAMAFigure 14.60: Point Source Intensity vs. Radius for F25CIII NUV-MAMA