ETC Request ID: STIS.sp.1438070
Requested Signal/Noise Ratio = 10.000 at wavelength 2376.00 Å (per resolution element)
gives: Time = 1,364.3825 seconds
Table of Source and Noise Counts per Pixel
| Detailed Information | Count rate | Total counts | Associated noise |
| (counts/s) | (counts) | (counts) | |
| Counts (box 11 pixels high) | (1 pix x 11 pix) | (2 pix resel x 11 pix) | |
| Source | 0.053 | 145.41 | 12.06 |
| Background | 0.024 | 66.04 | 8.13 |
| Sky | 9.386e-07 | 2.56e-03 | 0.05 |
| Dark Current | 0.024 | 66.04 | 8.13 |
| Total in selected region | 0.077 | 211.45 | 14.54 |
| Brightest Pixel (single exposure) (at 2662.40 Å) | 0.027 | 36.49 | |
| Count rate entire detector | 2,354.965 | ||
| Buffer Time (sec) | 849.27 | ||
| 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 | 46.373 | 63,271.002 | |
| Background (sky+dark) | 2,308.591 | 3,149,801.47 | |
| Encircled energy fraction | 0.79 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | |
| Grating: | [G230L] R ~ 500 |
| Aperture: | 52X0.2 |
| Target: [point source] | |
| Spectrum: | Flat in units of Fλ |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to abmag = 18.0 in filter Sloan/U |
| 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 28.1
