ETC Request ID: STIS.sp.1370857
Exposure time (seconds) = 900.0000 at wavelength 1451.00 Å
gives: SNR = 75.4522 (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 | 3.164 | 5,694.92 | 75.46 |
| Background | 0.001 | 1.89 | 1.37 |
| Sky | 3.445e-11 | 6.20e-08 | 2.49e-04 |
| Dark Current | 0.001 | 1.89 | 1.37 |
| Total in selected region | 3.165 | 5,696.81 | 75.48 |
| Brightest Pixel (single exposure) (at 1314.90 Å) | 1.619 | 1,457.19 | |
| Count rate entire detector | 4,313.705 | ||
| Buffer Time (sec) | 463.64 | ||
| 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 | 3,027.808 | 2,725,027.328 | |
| Background (sky+dark) | 1,285.897 | 1,157,307.10 | |
| Encircled energy fraction | 0.83 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | |
| Grating: | [G140L] R ~ 1000 |
| Aperture: | 52X2 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | Kurucz Models O5V 44500 5.0 |
| Extinction E(B-V): | Milky Way Diffuse (Rv=3.1) = 0.384 applied before normalization |
| Normalization: | Flux 1.9e-14 flam at 3729.0 Å |
| 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
