ETC Request ID: STIS.sp.1401753
Exposure time (seconds) = 2,400.0000 at wavelength 2500.00 Å
gives: SNR = 14.8483 (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 11 pixels high) | (1 pix x 11 pix) | (2 pix resel x 11 pix) | |
| Source | 0.063 | 304.56 | 17.45 |
| Background | 0.024 | 116.17 | 10.78 |
| Sky | 1.253e-06 | 6.01e-03 | 0.08 |
| Dark Current | 0.024 | 116.16 | 10.78 |
| Total in selected region | 0.088 | 420.73 | 20.51 |
| Brightest Pixel (single exposure) (at 2702.40 Å) | 0.032 | 77.38 | |
| Count rate entire detector | 2,356.516 | ||
| Buffer Time (sec) | 848.71 | ||
| 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 | 47.925 | 115,019.214 | |
| Background (sky+dark) | 2,308.591 | 5,540,618.92 | |
| Encircled energy fraction | 0.80 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | |
| Grating: | [G230L] R ~ 500 |
| Aperture: | 52X0.2 |
| Target: [point source] | |
| Spectrum: | Black body at 10000.0K |
| Extinction E(B-V): | Milky Way Diffuse (Rv=3.1) = 0.11 applied before normalization |
| Normalization: | Renormalized to vegamag = 17.31 in filter Johnson/V |
| 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 28.1
