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Space Telescope Imaging Spectrograph Instrument Handbook for Cycle 22 > Chapter 13: Spectroscopic Reference Material > 0.3X0.05ND Aperture

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.
Figure 13.81: 0.3X0.05ND Aperture Throughput as a Function of Wavelength

Space Telescope Imaging Spectrograph Instrument Handbook for Cycle 22 > Chapter 13: Spectroscopic Reference Material > 0.3X0.05ND Aperture

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