ETC Request ID: STIS.sp.1365947
Exposure time (seconds) = 2,580.0000 at wavelength 2400.00 Å
gives: SNR = 7.1767 (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 | 0.018 | 91.96 | 9.59 |
| Background | 0.014 | 72.24 | 8.50 |
| Sky | 5.370e-07 | 2.77e-03 | 0.05 |
| Dark Current | 0.014 | 72.24 | 8.50 |
| Total in selected region | 0.032 | 164.21 | 12.81 |
| Brightest Pixel (single exposure) (at 2465.60 Å) | 0.009 | 23.93 | |
| Count rate entire detector | 2,112.154 | ||
| Buffer Time (sec) | 946.90 | ||
| 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 | 13.284 | 34,273.796 | |
| Background (sky+dark) | 2,098.870 | 5,415,084.61 | |
| Encircled energy fraction | 0.86 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | |
| Grating: | [G230L] R ~ 500 |
| Aperture: | 52X0.2 |
| Target: [point source] | |
| Spectrum: | Black body at 20000.0K |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to abmag = 20.4 in filter WFC3/UVIS1/F200LP |
| Redshift: | z=0.088 |
| Emission Lines: | None |
| Selected background: | |
| Sky Background: | |
| Level: |
Table of Source and Noise Counts per Pixel
These results were computed using: ETC version 27.2
