ETC Request ID: STIS.sp.1004819
Exposure time (seconds) = 308.0000 at wavelength 3000.00 Å
gives: SNR = 23.9348 (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 | 0.955 | 588.02 | 24.25 |
| Background | 0.011 | 6.47 | 2.54 |
| Sky | 5.045e-08 | 3.11e-05 | 5.57e-03 |
| Dark Current | 0.011 | 6.47 | 2.54 |
| Total in selected region | 0.965 | 594.49 | 24.57 |
| Brightest Pixel (single exposure) (at 2914.98 Å) | 0.474 | 146.14 | |
| Count rate entire detector | 12,126.915 | ||
| Buffer Time (sec) | 164.92 | ||
| 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 | 8,580.524 | 2,642,801.517 | |
| Background (sky+dark) | 1,572.868 | 484,443.22 | |
| 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: | Pickles Models G2V 5636.38K |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 7.65 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
