Chapter 5:
Imaging
5.1 Imaging Overview
5.1.1 STIS versus ACS Imaging
5.1.2 STIS vs. WFPC2 Imaging
5.1.3 Caveats for STIS Imaging
5.1.4 Throughputs and Limiting Magnitudes
5.1.5 Signal-To-Noise Ratios
5.1.6 Saturation
5.2 Optical CCD Imaging
5.2.1 Effect of the optical baffles on STIS CCD imaging
5.2.2 Unfiltered (Clear) CCD Imaging-50CCD
5.2.3 Optical Longpass-F28X50LP
5.2.4 [O III]-F28X50OIII
5.2.5 [O II]-F28X50OII
5.3 Ultraviolet Imaging with the MAMA Detectors
5.3.1 Bright-Object Limits
5.3.2 Optical Performance
5.3.3 Unfiltered (Clear) MAMA Imaging-25MAMA
5.3.4 Longpass-Filtered MAMA Imaging-
F25SRF2 and F25QTZ
5.3.5 MAMA Narrow-band-Filtered Imaging
5.4 Neutral-Density Filters
In this chapter we describe the imaging capabilities of STIS. Each imaging mode is described and plots of throughput and comparisons to the capabilities of WFPC2 and ACS are provided. (Signal-to-noise comparisons to WFPC2 assume the use of the WF chips.) Curves of sensitivity and exposure time as a function of source brightness to achieve a given signal-to-noise ratio are referenced in this chapter, but presented in Chapter 14. We note the existence of bright-object observing limits for MAMA imaging modes which are described in detail in Chapter 7, and tables of the MAMA imaging bright-object screening magnitudes as a function of mode and spectral type which are presented in Chapter 14.
