ETC Request ID: STIS.sp.1407199
Exposure time (seconds) = 2,970.0000 at wavelength 1425.00 Å
gives: SNR = 174.2838 (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 11 pixels high) | (1 pix x 11 pix) | (2 pix resel x 11 pix) | |
| Source | 5.115 | 30,384.64 | 174.31 |
| Background | 0.002 | 9.80 | 3.13 |
| Sky | 4.480e-11 | 2.66e-07 | 5.16e-04 |
| Dark Current | 0.002 | 9.80 | 3.13 |
| Total in selected region | 5.117 | 30,394.44 | 174.34 |
| Brightest Pixel (single exposure) (at 1293.30 Å) | 2.163 | 6,424.30 | |
| Count rate entire detector | 7,035.517 | ||
| Buffer Time (sec) | 284.27 | ||
| 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 | 5,750.217 | 17,078,143.377 | |
| Background (sky+dark) | 1,285.300 | 3,817,340.80 | |
| Encircled energy fraction | 0.72 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | |
| Grating: | [G140L] R ~ 1000 |
| Aperture: | 52X2 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | Standard HST Star Spectra WD0308-565 (sdB D, 14.07) [900.0, 400000.0 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 28.1
