ETC Request ID: STIS.sp.756606
Exposure time (seconds) = 2,500.0000 at wavelength 1216.00 Å
gives: SNR = 47.5019 (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 | 0.452 | 2,261.67 | 47.56 |
| Background | 0.001 | 5.25 | 2.29 |
| Sky | 2.481e-13 | 1.24e-09 | 3.52e-05 |
| Dark Current | 0.001 | 5.25 | 2.29 |
| Total in selected region | 0.453 | 2,266.92 | 47.61 |
| Brightest Pixel (single exposure) (at 1216.00 Å) | 0.150 | 374.44 | |
| Count rate entire detector | 171.773 | ||
| Buffer Time (sec) | |||
| 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 | 1.349 | 3,372.794 | |
| Background (sky+dark) | 170.424 | 426,060.28 | |
| Encircled energy fraction | 0.76 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | 1222 |
| Grating: | [G140M] R ~ 10000 |
| Aperture: | 52X0.05 |
| Glow region: |
| Target: [point source] | |
| Spectrum: | Pickles Models M4V 3111.72K |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 13.49 in filter Johnson/V |
| Redshift: | None |
| Emission Lines: | |
| Line at | Center 1216.0 Å FWHM 0.1 Å Flux 1e-13 Fλ |
| Selected background: | |
| Sky Background: | |
| Level: |
Table of Source and Noise Counts per Pixel
These results were computed using: ETC version ???
