F25CN270-NUV-MAMA

Description

The F25CN270 filter with the NUV-MAMA provides medium bandwidth imaging near the 2798 Å MgII feature.

Recommended Uses

Continuum filter for MgII imaging.

Special Considerations

There is a substantial redleak in this filter. Sources with a red underlying continuum may be difficult to observe. Users should be careful to take into account the underlying continuum in estimating whether the observation will fall within the bright-object protection limits.

Pivot (Å)	FWHM (Å)	AB mag zeropoint	Speak	B	R80 (arcsec)	Flux in central pixel
2710.6	161.9	21.428	1.24e+14	202.3	0.17	14%

Figure 14.50: F25CN270 NUV-MAMA Integrated System Throughput and Redleak

Figure 14.51: Point Source S/N vs. V+AB for the F25CN270 NUV-MAMA mode. Curves are labeled by required exposure time (sec).

Figure 14.52: Extended Source S/N vs. V+AB for the F25CN270 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 (sec).

* See STIS ISR 2003-01.

Figure 14.53: Point Source Encircled Energy for F25CN270 NUV-MAMA

Figure 14.54: Point Source Intensity vs. Radius for F25CN270 NUV-MAMA