ETC Request ID: STIS.sp.1449659
Exposure time (seconds) = 500.0000 at wavelength 2800.00 Å
gives: SNR = 19.5087 (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 | 0.403 | 402.99 | 20.07 |
| Background | 0.015 | 15.40 | 3.92 |
| Sky | 1.435e-08 | 1.43e-05 | 3.79e-03 |
| Dark Current | 0.015 | 15.40 | 3.92 |
| Total in selected region | 0.418 | 418.39 | 20.66 |
| Brightest Pixel (single exposure) (at 2648.02 Å) | 0.176 | 88.17 | |
| Count rate entire detector | 9,280.766 | ||
| Buffer Time (sec) | 215.50 | ||
| 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 | 5,669.837 | 2,834,918.724 | |
| Background (sky+dark) | 2,306.871 | 1,153,435.38 | |
| Encircled energy fraction | 0.93 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | 2707 |
| Grating: | [E230M] R ~ 30000 |
| Aperture: | 0.2X0.2 |
| Target: [point source] | |
| Spectrum: | User uploaded spectrum: SK-68D8_adopted_sed.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
