ETC Request ID: STIS.sp.1308715
Exposure time (seconds) = 5,280.0000 at wavelength 1425.00 Å
gives: SNR = 8.8046 (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 | 0.008 | 87.36 | 9.35 |
| Background | 0.001 | 11.09 | 3.33 |
| Sky | 2.890e-12 | 3.05e-08 | 1.75e-04 |
| Dark Current | 0.001 | 11.09 | 3.33 |
| Total in selected region | 0.009 | 98.45 | 9.92 |
| Brightest Pixel (single exposure) (at 1217.70 Å) | 0.013 | 68.12 | |
| Count rate entire detector | 277.316 | ||
| Buffer Time (sec) | 7,211.99 | ||
| 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 | 7.168 | 37,849.658 | |
| Background (sky+dark) | 270.147 | 1,426,378.48 | |
| 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 20000.0K |
| Extinction E(B-V): | Milky Way Diffuse (Rv=3.1) = 0.034 applied before normalization |
| Normalization: | Renormalized to abmag = 20.0 in filter Sloan/R |
| Redshift: | z=0.088 |
| Emission Lines: | None |
| Selected background: | |
| Sky Background: | |
| Level: |
Table of Source and Noise Counts per Pixel
These results were computed using: ETC version 27.1
