ETC Request ID: STIS.sp.1005861
Exposure time (seconds) = 900.0000 at wavelength 1300.00 Å
gives: SNR = 6.8460 (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 | 0.027 | 48.69 | 6.98 |
| Background | 0.001 | 1.89 | 1.37 |
| Sky | 9.582e-14 | 1.72e-10 | 1.31e-05 |
| Dark Current | 0.001 | 1.89 | 1.37 |
| Total in selected region | 0.028 | 50.58 | 7.11 |
| Brightest Pixel (single exposure) (at 1348.45 Å) | 0.016 | 14.11 | |
| Count rate entire detector | 218.698 | ||
| Buffer Time (sec) | 9,145.02 | ||
| 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 | 50.890 | 45,800.720 | |
| Background (sky+dark) | 167.809 | 151,027.81 | |
| Encircled energy fraction | 0.81 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | 1321 |
| Grating: | [G140M] R ~ 10000 |
| Aperture: | 52X0.2 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | Castelli-Kurucz Models F0V 7250 4.0 |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 2.77 in filter Johnson/U |
| 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
