ETC Request ID: STIS.sp.844876
Exposure time (seconds) = 1,900.0000 at wavelength 1250.00 Å
gives: SNR = 36.7031 (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 | 0.437 | 1,660.89 | 40.75 |
| Background | 0.001 | 3.99 | 2.00 |
| Sky | 1.822e-14 | 6.92e-11 | 8.32e-06 |
| Dark Current | 0.001 | 3.99 | 2.00 |
| Total in selected region | 0.438 | 1,664.88 | 45.25 |
| Brightest Pixel (single exposure) (at 1283.42 Å) | 0.192 | 364.78 | |
| Count rate entire detector | 19,722.994 | ||
| Buffer Time (sec) | 101.40 | ||
| 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 | 10,750.862 | 20,426,638.480 | |
| Background (sky+dark) | 157.359 | 298,981.60 | |
| Encircled energy fraction | 0.90 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | 1234 |
| Grating: | [E140H] R ~ 114000 |
| Aperture: | 0.2X0.09 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | User uploaded spectrum: hd233622_iue+model.dat |
| 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 24.2
