ETC Request ID: STIS.sp.636602
Exposure time (seconds) = 380.0000 at wavelength 1567.00 Å
gives: SNR = 44.9871 (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 pix) | (2.0 pix resel x pix) | |
| Source | 2.664 | 2,024.63 | 45.00 |
| Background | 0.001 | 0.80 | 0.89 |
| Sky | 2.642e-12 | 2.01e-09 | 4.48e-05 |
| Dark Current | 0.001 | 0.80 | 0.89 |
| Total in selected region | 2.665 | 2,025.43 | 45.00 |
| Brightest Pixel (single exposure) (at 1539.55 Å) | 1.007 | 382.50 | |
| Count rate entire detector | 3,519.302 | ||
| Buffer Time (sec) | |||
| 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 | 3,362.016 | 1,277,565.999 | |
| Background (sky+dark) | 157.286 | 59,768.83 | |
| Encircled energy fraction | 0.84 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | 1567 |
| Grating: | [G140M] R ~ 10000 |
| Aperture: | 52X0.2 |
| Glow region: |
| Target: [point source] | |
| Spectrum: | Standard HST Star Spectra AGK+81°266 (sdO, 11.94) [1148.6, 24955.1 Å] |
| Extinction E(B-V): | None |
| Normalization: | None |
| 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 22.2
