ETC Request ID: STIS.sp.823040
Requested Signal/Noise Ratio = 20.000 at wavelength 1500.00 Å (per resolution element)
gives: Time = 48.5682 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 pix) | (2.0 pix resel x pix) | |
| Source | 4.119 | 400.10 | 20.00 |
| Background | 0.001 | 0.10 | 0.32 |
| Sky | 6.199e-12 | 6.02e-10 | 2.45e-05 |
| Dark Current | 0.001 | 0.10 | 0.32 |
| Total in selected region | 4.120 | 400.20 | 20.01 |
| Brightest Pixel (single exposure) (at 1277.10 Å) | 3.365 | 163.45 | |
| Count rate entire detector | 6,503.123 | ||
| Buffer Time (sec) | 307.54 | ||
| 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 | 6,231.129 | 302,634.705 | |
| Background (sky+dark) | 271.994 | 13,210.25 | |
| Encircled energy fraction | 0.84 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | |
| Grating: | [G140L] R ~ 1000 |
| Aperture: | 52X0.2 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | Black body at 30000.0K |
| Extinction E(B-V): | None |
| Normalization: | Flux 1.5e-13 flam at 2000.0 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 24.2
