F25ND3—NUV-MAMA

Description

The F25ND3 mode with the NUV-MAMA provides broad band imaging with an attenuation of 10-3. The field of view is 25 × 25 arcsec. 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 14.32: F25ND3 NUV-MAMA Integrated System Throughput and Redleak

Table 14.3: Throughput and Sensitivity for F25ND3 NUV-MAMA

l	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 14.33: Point Source S/N vs. V+ABν for the F25ND3 NUV-MAMA mode. Top curves are for DARKTIME. Bottom curves are for average sky. Top curves are for DARKTIME. Bottom curves are for average sky. Curves are labeled by required exposure time (seconds).

Figure 14.34: 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).