0.2X0.09 Aperture

Description

This slit is used with high resolution echelle gratings. This slit is two pixels wide in dispersion for these gratings, providing optimal spectral resolution and line profiles.

Special Considerations

Used with E140H and E230H grating only. Observations with this slit require a prior PEAKUP.


Table 13.26: 0.2X0.06 Throughputs.

λ

% Throughput

1200

42.2

1800

57.7

2400

65.9

3000

68.5

3600

68.6

6000

64.9

Projected Length (arcsec)

Aperture

MAMA (E-modes)

Width (arcsec)

0.2X0.09

0.2

0.09

Figure 13.73: 0.2X0.09 Aperture Throughput as a Function of Wavelength.