ETC Request ID: STIS.sp.1005924
Exposure time (seconds) = 2,000.0000 at wavelength 2800.00 Å
gives: SNR = 8.4364 (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 | 0.025 | 101.96 | 10.10 |
| Background | 0.011 | 42.00 | 6.48 |
| Sky | 1.442e-08 | 5.77e-05 | 7.60e-03 |
| Dark Current | 0.011 | 42.00 | 6.48 |
| Total in selected region | 0.036 | 143.96 | 12.09 |
| Brightest Pixel (single exposure) (at 2911.51 Å) | 0.095 | 189.28 | |
| Count rate entire detector | 3,651.866 | ||
| Buffer Time (sec) | 547.67 | ||
| 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 | 1,690.242 | 3,380,484.426 | |
| Background (sky+dark) | 1,572.868 | 3,145,735.18 | |
| 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 F8V 6250 4.0 |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 10.05 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 25.2
