ETC Request ID: STIS.sp.1040056
Exposure time (seconds) = 1,922.0000 at wavelength 1215.00 Å
gives: SNR = 38.8511 (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 | 0.394 | 1,513.43 | 38.90 |
| Background | 0.001 | 4.04 | 2.01 |
| Sky | 7.172e-13 | 2.76e-09 | 5.25e-05 |
| Dark Current | 0.001 | 4.04 | 2.01 |
| Total in selected region | 0.395 | 1,517.47 | 38.95 |
| Brightest Pixel (single exposure) (at 1215.00 Å) | 0.130 | 250.81 | |
| Count rate entire detector | 202.541 | ||
| Buffer Time (sec) | 9,874.54 | ||
| 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 | 7.231 | 13,898.176 | |
| Background (sky+dark) | 195.310 | 375,385.79 | |
| Encircled energy fraction | 0.75 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | 1222 |
| Grating: | [G140M] R ~ 10000 |
| Aperture: | 52X0.1 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | Castelli-Kurucz Models K5V 4250 4.5 |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 10.1 in filter Johnson/V |
| Redshift: | None |
| Emission Lines: | |
| Line at | Center 1215.0 Å FWHM 0.65 Å Flux 3.44e-13 Fλ |
| Selected background: | |
| Sky Background: | |
| Level: |
Table of Source and Noise Counts per Pixel
These results were computed using: ETC version 25.2
