ETC Request ID: STIS.sp.1006791
Exposure time (seconds) = 2,125.0000 at wavelength 1347.00 Å
gives: SNR = 18.9706 (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 | 0.099 | 422.10 | 20.55 |
| Background | 0.001 | 4.46 | 2.11 |
| Sky | 4.233e-15 | 1.80e-11 | 4.24e-06 |
| Dark Current | 0.001 | 4.46 | 2.11 |
| Total in selected region | 0.100 | 426.56 | 22.25 |
| Brightest Pixel (single exposure) (at 1345.36 Å) | 0.037 | 78.27 | |
| Count rate entire detector | 5,122.481 | ||
| Buffer Time (sec) | 390.44 | ||
| 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 | 2,903.616 | 6,170,184.557 | |
| Background (sky+dark) | 157.308 | 334,279.47 | |
| Encircled energy fraction | 0.93 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | 1343 |
| Grating: | [E140H] R ~ 114000 |
| Aperture: | 0.2X0.2 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | Castelli-Kurucz Models B5I 14000 2.5 |
| Extinction E(B-V): | Milky Way Diffuse (Rv=3.1) = 0.52 applied before normalization |
| Normalization: | Renormalized to vegamag = 7.57 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 25.2
