ETC Request ID: STIS.sp.1005094
Exposure time (seconds) = 3,000.0000 at wavelength 2325.00 Å
gives: SNR = 0.5049 (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 2 pix) | (2 pix resel x 2 pix) | |
| Source | 3.790e-04 | 2.27 | 1.51 |
| Background | 0.003 | 18.01 | 4.24 |
| Sky | 1.667e-06 | 0.01 | 0.10 |
| Dark Current | 0.003 | 18.00 | 4.24 |
| Total in selected region | 0.003 | 20.28 | 4.50 |
| Brightest Pixel (single exposure) (at 2384.00 Å) | 0.002 | 5.07 | |
| Count rate entire detector | 1,595.311 | ||
| Buffer Time (sec) | 1,253.67 | ||
| 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 | 5.042 | 15,124.768 | |
| Background (sky+dark) | 1,590.269 | 4,770,806.85 | |
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | |
| Grating: | [G230L] R ~ 500 |
| Aperture: | 52X2 |
| Target: [extended source] | |
| Source diameter (arcsec): | 8.0 |
| Spectrum: | Empty |
| Extinction E(B-V): | None |
| Normalization: | None |
| Redshift: | None |
| Emission Lines: | |
| Line at | Center 2325.0 Å FWHM 0.5 Å Flux 3.4e-15 Fλ |
| Selected background: | |
| Sky Background: | |
| Level: |
Table of Source and Noise Counts per Pixel
These results were computed using: ETC version 25.2
