ETC Request ID: STIS.sp.1451668
Exposure time (seconds) = 7,400.0000 at wavelength 1425.00 Å
gives: SNR = 25.7005 (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 | 0.053 | 780.02 | 27.93 |
| Background | 0.001 | 15.54 | 3.94 |
| Sky | 2.137e-14 | 3.16e-10 | 1.78e-05 |
| Dark Current | 0.001 | 15.54 | 3.94 |
| Total in selected region | 0.054 | 795.56 | 30.35 |
| Brightest Pixel (single exposure) (at 1333.43 Å) | 0.036 | 267.67 | |
| Count rate entire detector | 2,540.133 | ||
| Buffer Time (sec) | 787.36 | ||
| 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 | 1,435.367 | 10,621,719.027 | |
| Background (sky+dark) | 157.418 | 1,164,893.67 | |
| Encircled energy fraction | 0.94 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | 1425 |
| Grating: | [E140M] R ~ 45800 |
| Aperture: | 0.2X0.2 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | User uploaded spectrum: Sk67d20_stis_e140m_newsed.fits |
| 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 28.2
