0.3X0.05ND Aperture

Description

Supported neutral-density-filtered slit for use with bright objects with the echelle gratings. The dex ND factor is 3.0.

Special Considerations

Observations with this slit require a prior PEAKUP. This aperture can also be used with the CCD for ACQ/PEAKs.

Table 13.33: 0.3X0.05ND Throughputs.

λ

% Throughput

1150

0.028

1350

0.042

1550

0.044

1750

0.038

1950

0.032

2150

0.035

2350

0.044

2550

0.057

2750

0.067

2950

0.072

3150

0.074

Projected Length (arcsec)

Aperture

MAMA (E-modes)

Width (arcsec)

0.3X0.05ND

0.3

0.05

Figure 13.82: 0.3X0.05ND Aperture Throughput as a Function of Wavelength.