ETC Request ID: STIS.sp.826183
Exposure time (seconds) = 2,100.0000 at wavelength 2825.00 Å
gives: SNR = 25.7423 (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 pix) | (2.0 pix resel x pix) | |
| Source | 0.171 | 716.66 | 26.77 |
| Background | 0.011 | 44.10 | 6.64 |
| Sky | 5.224e-08 | 2.19e-04 | 0.01 |
| Dark Current | 0.011 | 44.10 | 6.64 |
| Total in selected region | 0.181 | 760.76 | 27.84 |
| Brightest Pixel (single exposure) (at 2911.51 Å) | 0.085 | 179.05 | |
| Count rate entire detector | 3,604.436 | ||
| Buffer Time (sec) | 554.87 | ||
| 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 | 1,651.682 | 3,468,532.204 | |
| Background (sky+dark) | 1,572.868 | 3,303,021.89 | |
| Encircled energy fraction | 0.93 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | 2707 |
| Grating: | [E230M] R ~ 30000 |
| Aperture: | 0.2X0.2 |
| Target: [point source] | |
| Spectrum: | Castelli-Kurucz Models F5V 6500 4.0 |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 10.3 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 24.2
