F25ND3 - NUV-MAMA

Description

The F25ND3 mode with the NUV-MAMA provides broad band imaging with an attenuation of 10-3. The value of R80 and the central pixel flux are unmeasured but assumed to be approximately the same as produced by the F25QTZ filter.

Recommended Uses

Recommended for broad-band NUV imaging of objects too bright by 103 for clear mode.


Pivot λ (Å)

FWHM (Å)

AB mag zero point

Speak

Bλ

R80 (arcsec)

Flux in central pixel

2360.7

1344.5

16.62

2.38e+11

942.0

0.32

8%

Figure 14.28: F25ND3 NUV-MAMA Integrated System Throughput and Redleak



Table 14.12: Throughput and Sensitivity for F25ND3 NUV-MAMA

λ

Sensitivity

% Throughput

1200.

7.12E9

2.6e-4

1300.

1.95E10

6.6e-4

1400.

3.03E10

9.5e-4

1500.

3.70E10

1.1e-3

1600.

3.70E10

1.0e-3

1700.

3.62E10

9.4e-4

1800.

4.03E10

9.8e-4

1900.

4.73E10

1.1e-3

2000.

5.95E10

1.3e-3

2100.

7.84E10

1.6e-3

2200.

1.03E11

2.1e-3

2300.

1.29E11

2.5e-3

2400.

1.53E11

2.8e-3

2500.

1.79E11

3.1e-3

2600.

2.04E11

3.4e-3

2700.

2.16E11

3.5e-3

2800.

2.20E11

3.4e-3

2900.

1.92E11

2.9e-3

3000.

1.52E11

2.2e-3

3100.

7.44E10

1.1e-3

Figure 14.29: Point Source S/N vs. V+ABν for the F25ND3 NUV-MAMA mode. Top curves are for DARKTIME. Bottom curves are for average sky. Curves are labeled by required exposure time (sec.).


Figure 14.30: Extended Source S/N vs. V+ABν for the F25ND3 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).