ETC Request ID: STIS.sp.1454490
Exposure time (seconds) = 7,500.0000 at wavelength 1425.00 Å
gives: SNR = 24.1271 (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 | 0.046 | 689.14 | 26.25 |
| Background | 0.001 | 15.75 | 3.97 |
| Sky | 2.137e-14 | 3.21e-10 | 1.79e-05 |
| Dark Current | 0.001 | 15.75 | 3.97 |
| Total in selected region | 0.047 | 704.89 | 28.56 |
| Brightest Pixel (single exposure) (at 1555.01 Å) | 0.056 | 417.53 | |
| Count rate entire detector | 2,988.598 | ||
| Buffer Time (sec) | 669.21 | ||
| 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 | 1,705.531 | 12,791,480.060 | |
| Background (sky+dark) | 157.418 | 1,180,635.48 | |
| 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: Sk69d191_sed_new.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
