ETC Request ID: STIS.sp.1011541
Requested Signal/Noise Ratio = 50.000 at wavelength 2796.00 Å (per resolution element)
gives: Time = 1,195.5360 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 | 1.084 | 2,591.85 | 50.91 |
| Background | 0.011 | 25.11 | 5.01 |
| Sky | 1.039e-09 | 2.49e-06 | 1.58e-03 |
| Dark Current | 0.011 | 25.11 | 5.01 |
| Total in selected region | 1.094 | 2,616.96 | 51.84 |
| Brightest Pixel (single exposure) (at 2796.30 Å) | 0.797 | 952.65 | |
| Count rate entire detector | 5,975.290 | ||
| Buffer Time (sec) | 334.71 | ||
| 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 | 3,765.976 | 4,502,359.322 | |
| Background (sky+dark) | 1,572.864 | 1,880,415.60 | |
| Encircled energy fraction | 0.93 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | 2713 |
| Grating: | [E230H] R ~ 114000 |
| Aperture: | 0.2X0.09 |
| Target: [point source] | |
| Spectrum: | Kurucz Models G8V 5570 4.5 |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 6.578 in filter Johnson/V |
| Redshift: | None |
| Emission Lines: | |
| Line at | Center 2796.3 Å FWHM 0.6 Å Flux 6e-12 Fλ |
| Selected background: | |
| Sky Background: | |
| Level: |
Table of Source and Noise Counts per Pixel
These results were computed using: ETC version 25.2
