ETC Request ID: STIS.sp.1024423
Exposure time (seconds) = 1,116.0000 at wavelength 2796.00 Å
gives: SNR = 0.1430 (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 | 3.148e-04 | 0.70 | 0.84 |
| Background | 0.011 | 23.44 | 4.84 |
| Sky | 2.310e-09 | 5.15e-06 | 2.27e-03 |
| Dark Current | 0.011 | 23.44 | 4.84 |
| Total in selected region | 0.011 | 24.14 | 4.92 |
| Brightest Pixel (single exposure) (at 2803.51 Å) | 0.023 | 25.97 | |
| Count rate entire detector | 1,579.117 | ||
| Buffer Time (sec) | 1,266.53 | ||
| 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 | 5.349 | 5,969.807 | |
| Background (sky+dark) | 1,572.864 | 1,755,316.36 | |
| Encircled energy fraction | 0.93 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | 2713 |
| Grating: | [E230H] R ~ 114000 |
| Aperture: | 0.2X0.2 |
| Target: [point source] | |
| Spectrum: | Kurucz Models M2V 3500 4.6 |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 11.62 in filter Johnson/U |
| Redshift: | None |
| Emission Lines: | |
| Line at | Center 2796.34 Å FWHM 0.15 Å Flux 3.6e-14 Fλ |
| Line at | Center 2803.51 Å FWHM 0.15 Å Flux 4.2e-14 Fλ |
| Selected background: | |
| Sky Background: | |
| Level: |
Table of Source and Noise Counts per Pixel
These results were computed using: ETC version 25.2
