F25CIII - NUV-MAMA

Description

The F25CIII filter with the NUV-MAMA provides narrow band imaging of the C III] 1907 + 1909 Å feature.

Recommended Uses

C III] imaging.


Pivot λ (Å)

FWHM (Å)

AB mag zero point

Speak

Bλ

R80 (arcsec)

Flux in central pixel

2011.0

389.3

19.371

1.01e+13

205.6

0.23

10%

Figure 14.55: F25CIII NUV-MAMA Integrated System Throughput and Redleak



Table 14.22: F25CIII NUV-MAMA Sensitivity & Throughput

λ

Sensitivity

% Throughput

1750.

1.82E11

0.00

1800.

3.89E11

0.01

1850.

1.33E12

0.03

1900.

4.91E12

0.11

1950.

9.37E12

0.21

2000.

9.44E12

0.21

2050.

6.81E12

0.15

2100.

3.78E12

0.08

2150.

1.79E12

0.04

2200.

7.92E11

0.02

2250.

3.89E11

0.01

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).



Table 14.23: Radial Profile for F25CIII (see STIS ISR 2003-01.)

Radius


 

Fraction of Energy Encircled

Pixels

Arcsec

Intensity

1

0.024

4.859e-02

0.173

1.5

0.037

3.660e-02

0.284

2

0.049

2.557e-02

0.392

3

0.073

9.899e-03

0.528

4

0.098

3.609e-03

0.598

5

0.122

1.832e-03

0.649

10

0.245

2.759e-04

0.753

15

0.367

1.339e-04

0.822

20

0.490

7.056e-05

0.873

25

0.613

4.358e-05

0.911

30

0.735

3.353e-05

0.944

40

0.980

1.002e-05

0.981

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 peak


Figure 14.59: Point Source Encircled Energy for F25CIII NUV-MAMA


Figure 14.60: Point Source Intensity vs. Radius for F25CIII NUV-MAMA