ETC Request ID: STIS.sp.1011626
Requested Signal/Noise Ratio = 50.000 at wavelength 2796.00 Å (per resolution element)
gives: Time = 1,521.5140 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 | 0.854 | 2,598.38 | 50.97 |
| Background | 0.011 | 31.95 | 5.65 |
| Sky | 1.039e-09 | 3.16e-06 | 1.78e-03 |
| Dark Current | 0.011 | 31.95 | 5.65 |
| Total in selected region | 0.864 | 2,630.33 | 51.97 |
| Brightest Pixel (single exposure) (at 2796.30 Å) | 0.608 | 925.69 | |
| Count rate entire detector | 11,068.942 | ||
| Buffer Time (sec) | 180.69 | ||
| 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 | 8,123.249 | 12,359,637.052 | |
| Background (sky+dark) | 1,572.864 | 2,393,134.67 | |
| 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 G2V 5860 4.4 |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 6.17 in filter Johnson/V |
| Redshift: | None |
| Emission Lines: | |
| Line at | Center 2796.3 Å FWHM 0.6 Å Flux 4.42e-12 Fλ |
| Selected background: | |
| Sky Background: | |
| Level: |
Table of Source and Noise Counts per Pixel
These results were computed using: ETC version 25.2
