ETC Request ID: STIS.sp.1174763
Requested Signal/Noise Ratio = 10.000 at wavelength 2376.00 Å (per resolution element)
gives: Time = 2,173.1649 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 | 0.031 | 134.06 | 11.58 |
| Background | 0.011 | 45.66 | 6.76 |
| Sky | 6.409e-06 | 0.03 | 0.17 |
| Dark Current | 0.011 | 45.64 | 6.76 |
| Total in selected region | 0.041 | 179.73 | 13.41 |
| Brightest Pixel (single exposure) (at 2796.80 Å) | 0.702 | 1,525.42 | |
| Count rate entire detector | 1,617.324 | ||
| Buffer Time (sec) | 1,236.61 | ||
| 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 | 27.269 | 59,259.936 | |
| Background (sky+dark) | 1,590.055 | 3,455,450.95 | |
| Encircled energy fraction | 0.85 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | |
| Grating: | [G230L] R ~ 500 |
| Aperture: | 52X2 |
| Target: [point source] | |
| Spectrum: | User uploaded spectrum: muscles_M4.5.csv |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to abmag = 20.64 in filter Galex/NUV |
| 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 26.1
