ETC Request ID: STIS.sp.1168819
Exposure time (seconds) = 3,000.0000 at wavelength 2300.00 Å
gives: SNR = 188.7593 (per resolution element)
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 | 5.949 | 35,692.98 | 188.93 |
| Background | 0.011 | 63.00 | 7.94 |
| Sky | 6.083e-07 | 3.65e-03 | 0.06 |
| Dark Current | 0.011 | 63.00 | 7.94 |
| Total in selected region | 5.959 | 35,755.99 | 189.09 |
| Brightest Pixel (single exposure) (at 2606.40 Å) | 2.897 | 8,691.93 | |
| Count rate entire detector | 6,712.205 | ||
| Buffer Time (sec) | 297.96 | ||
| 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 | 5,137.620 | 15,412,861.178 | |
| Background (sky+dark) | 1,574.585 | 4,723,754.99 | |
| Encircled energy fraction | 0.85 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | |
| Grating: | [G230L] R ~ 500 |
| Aperture: | 52X0.2 |
| Target: [point source] | |
| Spectrum: | Flat in units of Fλ |
| Extinction E(B-V): | None |
| Normalization: | Flux 6e-14 flam at 1900.0 Å |
| Redshift: | None |
| Emission Lines: | None |
| Selected background: | |
| Sky Background: | |
| Level: |
Table of Source and Noise Counts per Pixel
These results were computed using: ETC version 26.1
