0.2X0.06 Aperture

Description

This slit is supported for use with the medium resolution echelle gratings, and is available-but-unsupported for the first-order gratings and the high resolution echelle gratings. It is two pixels wide in the dispersion direction for the MAMA echelle gratings, providing optimal spectral resolution and line profiles.

Special Considerations

Used primarily with the E230M and E140M gratings. Observations with this slit require a prior PEAKUP.


Table 13.24: 0.2X0.06 Throughputs.

λ

% Throughput

1200

35.3

1800

50.5

2400

57.1

3000

59.0

3600

59.3

4200

58.7

4800

57.2

5400

55.2

6000

52.4

Projected Length (arcsec)

Aperture

MAMA (E-modes)

Width (arcsec)

0.2X0.06

0.2

0.063

Figure 13.71: 0.2X0.06 Aperture Throughput as a Function of Wavelength.