Space Telescope Imaging Spectrograph Instrument Handbook for Cycle 14

52X0.2F1 Aperture

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Description

The same physical aperture as the 52X0.2 but used at the position of the smaller of the two fiducials. The fiducial bar can be used for spectroscopic coronagraphic observations. The throughput for the unocculted 52X0.2 aperture is given below.

Special Considerations

Observations using this slit do not need to be preceded by a PEAKUP.

Table 13.23: 52X0.2 Throughputs

	% Throughput
1200	65.3
1600	73.1
2000	77.0
2400	80.2
2800	82.2
3200	83.6
3600	84.6
4000	85.6
4400	86.5
4800	86.7
5200	86.9
5600	86.8
6000	86.4
6400	85.8
6800	84.9
7200	83.8
7600	82.7
8000	81.9
8400	81.2

	Projected Length (arcsec)
Aperture	CCD	MAMA (M-modes)	MAMA (L-modes)	Width (arcsec)
52X0.2F1	52.0	28.0	25.0	0.2
Fiducial	0.5	0.5	0.5	0.2

Figure 13.70: 52X0.2 Aperture Throughput as a Function of Wavelength


 

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