ETC Request ID: STIS.sp.996402
Exposure time (seconds) = 2,500.0000 at wavelength 1216.00 Å
gives: SNR = 7.4918 (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 2 pixels high) | (1 pix x pix) | (2.0 pix resel x pix) | |
| Source | 0.012 | 57.59 | 7.59 |
| Background | 3.000e-04 | 1.50 | 1.22 |
| Sky | 2.080e-13 | 1.04e-09 | 3.23e-05 |
| Dark Current | 3.000e-04 | 1.50 | 1.22 |
| Total in selected region | 0.012 | 59.09 | 7.69 |
| Brightest Pixel (single exposure) (at 1215.70 Å) | 0.009 | 23.73 | |
| Count rate entire detector | 221.189 | ||
| Buffer Time (sec) | 9,042.04 | ||
| 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 | 25.370 | 63,424.457 | |
| Background (sky+dark) | 195.819 | 489,547.96 | |
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | 1222 |
| Grating: | [G140M] R ~ 10000 |
| Aperture: | 52X0.1 |
| Glow region: | low |
| Target: [extended source] | |
| Source diameter (arcsec): | 52.0 |
| Spectrum: | Empty |
| Extinction E(B-V): | None |
| Normalization: | None |
| Redshift: | None |
| Emission Lines: | |
| Line at | Center 1216.0 Å FWHM 0.1 Å Flux 2e-13 Fλ |
| Selected background: | |
| Sky Background: | |
| Level: |
Table of Source and Noise Counts per Pixel
These results were computed using: ETC version 25.1.1
