ETC Request ID: STIS.sp.1431331
Requested Signal/Noise Ratio = 10.000 at wavelength 2376.00 Å (per resolution element)
gives: Time = 4.4447 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 | 11.274 | 100.21 | 10.01 |
| Background | 0.024 | 0.22 | 0.46 |
| Sky | 9.386e-07 | 8.34e-06 | 2.89e-03 |
| Dark Current | 0.024 | 0.22 | 0.46 |
| Total in selected region | 11.298 | 100.43 | 10.02 |
| Brightest Pixel (single exposure) (at 2587.20 Å) | 4.670 | 20.75 | |
| Count rate entire detector | 11,436.427 | ||
| Buffer Time (sec) | 174.88 | ||
| 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 | 9,127.835 | 40,570.214 | |
| Background (sky+dark) | 2,308.591 | 10,260.93 | |
| 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: | Black body at 15000.0K |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 13.1 in filter Johnson/V |
| 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
