ETC Request ID: STIS.sp.1367897
Requested Signal/Noise Ratio = 5.000 at wavelength 1300.00 Å (per resolution element)
gives: Time = 5,477.2775 seconds
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 | 0.003 | 33.57 | 5.79 |
| Background | 0.001 | 11.50 | 3.39 |
| Sky | 2.802e-13 | 3.07e-09 | 5.54e-05 |
| Dark Current | 0.001 | 11.50 | 3.39 |
| Total in selected region | 0.004 | 45.07 | 6.71 |
| Brightest Pixel (single exposure) (at 1216.50 Å) | 0.008 | 42.25 | |
| Count rate entire detector | 179.554 | ||
| Buffer Time (sec) | 11,138.72 | ||
| 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 | 3.081 | 16,875.956 | |
| Background (sky+dark) | 176.473 | 966,590.37 | |
| Encircled energy fraction | 0.81 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | |
| Grating: | [G140L] R ~ 1000 |
| Aperture: | 52X0.05 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | Black body at 10000.0K |
| Extinction E(B-V): | Milky Way Diffuse (Rv=3.1) = 0.04 applied after normalization |
| Normalization: | Renormalized to vegamag = 16.0 in filter WFC3/UVIS1/F218W |
| 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 27.2
