ETC Request ID: STIS.sp.1383725
Exposure time (seconds) = 1,000.0000 at wavelength 1476.00 Å
gives: SNR = 25.7734 (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 | 0.333 | 666.36 | 25.81 |
| Background | 0.001 | 2.10 | 1.45 |
| Sky | 4.119e-12 | 8.24e-09 | 9.08e-05 |
| Dark Current | 0.001 | 2.10 | 1.45 |
| Total in selected region | 0.334 | 668.46 | 25.85 |
| Brightest Pixel (single exposure) (at 1302.90 Å) | 0.176 | 175.73 | |
| Count rate entire detector | 630.564 | ||
| Buffer Time (sec) | 3,171.76 | ||
| 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 | 360.417 | 360,416.829 | |
| Background (sky+dark) | 270.147 | 270,147.44 | |
| Encircled energy fraction | 0.83 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | |
| Grating: | [G140L] R ~ 1000 |
| Aperture: | 52X0.2 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | Black body at 22000.0K |
| Extinction E(B-V): | Milky Way Diffuse (Rv=3.1) = 0.094 applied before normalization |
| Normalization: | Renormalized to abmag = 16.0 in filter Sloan/R |
| Redshift: | z=0.015 |
| 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
