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Space Telescope Imaging Spectrograph Instrument Handbook for Cycle 22 > Chapter 14: ImagingReference Material > F28X50OIII—CCD

F28X50OIII—CCD
Description
The F28X50OIII mode is useful for narrow-band imaging of O III 5007 . The narrow bandpass and high spatial resolution provides some advantages over WFPC2 with the F502N filter, although the spatial resolution is not as high as that of ACS/HRC with its F502N filter.
Recommended Uses
Recommended for deep high-resolution O III imaging.
Special Considerations
This filter has a significant red leak longward of 1 micron. Depending on the source spectrum, the contribution from redleak may swamp the contribution from line emission.
 
Pivot λ ()
Speak
Bλ
R80 (arcsec)
Figure 14.12: Throughput for F28x50OIII.
Table 14.6: F28X50OIII Sensitivity & Throughput
Figure 14.13: Point Source S/N vs. V+ABν for the F28X50OIII filter.Top curves are for low sky; bottom curves are for average sky. Curves are labeled by required exposure time (seconds).
Figure 14.14: Extended Source S/N vs. V+ABν for the F28X50OIII for gain=1. Top curves are for a source area of 0.2 arcsec2; bottom curves are for 1 arcsec2. Average sky assumed. Curves are labeled by required exposure time (seconds).
Table 14.7: Radial Profile for F28X50OIII
Figure 14.15: Point Source PSF for F28X50OIII, 7."5 square (pixel 493,542, log scaled, B-V=-0.34)
Figure 14.16: Point Source Encircled Energy for F28X50OIII
Figure 14.17: Point Source Intensity vs. Radius for F28X50OIII

Space Telescope Imaging Spectrograph Instrument Handbook for Cycle 22 > Chapter 14: ImagingReference Material > F28X50OIII—CCD

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