ETC Request ID: STIS.sp.1011623
Requested Signal/Noise Ratio = 30.000 at wavelength 1216.00 Å (per resolution element)
gives: Time = 2,717.9832 seconds
Table of Source and Noise Counts per Pixel
| Detailed Information | Count rate | Total counts | Associated noise |
| (counts/s) | (counts) | (counts) | |
| Counts (box 7 pixels high) | (1 pix x 7 pix) | (2 pix resel x 7 pix) | |
| Source | 0.238 | 1,295.57 | 35.99 |
| Background | 0.001 | 5.71 | 2.39 |
| Sky | 8.103e-14 | 4.40e-10 | 2.10e-05 |
| Dark Current | 0.001 | 5.71 | 2.39 |
| Total in selected region | 0.239 | 1,301.27 | 43.19 |
| Brightest Pixel (single exposure) (at 1216.33 Å) | 0.156 | 423.55 | |
| Count rate entire detector | 205.662 | ||
| Buffer Time (sec) | 9,724.69 | ||
| For APT purposes, the recommended buffer time should be 4/5 of the buffer time calculated above. Please refer to the STIS Instrument Handbook for more details. | |||
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| Global Count Rates | |||
| Source only | 29.062 | 78,990.897 | |
| Background (sky+dark) | 157.419 | 427,860.85 | |
| Encircled energy fraction | 0.88 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | 1425 |
| Grating: | [E140M] R ~ 45800 |
| Aperture: | 0.2X0.2 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | Kurucz Models G8V 5570 4.5 |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 5.376 in filter Johnson/V |
| Redshift: | None |
| Emission Lines: | |
| Line at | Center 1216.35 Å FWHM 0.7 Å Flux 6.09e-12 Fλ |
| Selected background: | |
| Sky Background: | |
| Level: |
Table of Source and Noise Counts per Pixel
These results were computed using: ETC version 25.2
