ETC Request ID: STIS.sp.1010632
Exposure time (seconds) = 850.0000 at wavelength 2600.00 Å
gives: SNR = 38.8726 (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 | 0.899 | 1,528.72 | 39.10 |
| Background | 0.011 | 17.85 | 4.23 |
| Sky | 1.248e-06 | 2.12e-03 | 0.05 |
| Dark Current | 0.011 | 17.85 | 4.22 |
| Total in selected region | 0.910 | 1,546.58 | 39.33 |
| Brightest Pixel (single exposure) (at 2780.80 Å) | 2.567 | 2,182.20 | |
| Count rate entire detector | 1,978.244 | ||
| Buffer Time (sec) | 1,011.00 | ||
| 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 | 403.638 | 343,091.971 | |
| Background (sky+dark) | 1,574.606 | 1,338,415.46 | |
| Encircled energy fraction | 0.86 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | |
| Grating: | [G230L] R ~ 500 |
| Aperture: | 52X0.2 |
| Target: [point source] | |
| Spectrum: | User uploaded spectrum: tcha_13_cos.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 25.2
