ETC Request ID: STIS.sp.1006111
Requested Signal/Noise Ratio = 30.000 at wavelength 1215.67 Å (per resolution element)
gives: Time = 13,289.4831 seconds
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 | 0.064 | 1,690.90 | 41.12 |
| Background | 0.056 | 1,485.93 | 38.55 |
| Sky | 0.055 | 1,458.03 | 38.18 |
| Dark Current | 0.001 | 27.91 | 5.28 |
| Total in selected region | 0.120 | 3,176.84 | 56.36 |
| Brightest Pixel (single exposure) (at 1215.70 Å) | 0.030 | 402.93 | |
| Count rate entire detector | 196.213 | ||
| Buffer Time (sec) | 10,192.99 | ||
| 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 | 0.903 | 12,003.461 | |
| Background (sky+dark) | 195.310 | 2,595,568.72 | |
| Encircled energy fraction | 0.76 | ||
| 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 K2V 4750 4.5 |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to abmag = 21.59 in filter Galex/NUV |
| Redshift: | None |
| Emission Lines: | |
| Line at | Center 1215.67 Å FWHM 0.5 Å Flux 4.2561e-14 Fλ |
| Selected background: | |
| Sky Background: | |
| Level: |
Table of Source and Noise Counts per Pixel
These results were computed using: ETC version 25.2
