ETC Request ID: STIS.sp.1308714
Exposure time (seconds) = 2,034.0000 at wavelength 2376.00 Å
gives: SNR = 9.1285 (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 | 0.030 | 122.18 | 11.05 |
| Background | 0.014 | 56.95 | 7.55 |
| Sky | 6.071e-07 | 2.47e-03 | 0.05 |
| Dark Current | 0.014 | 56.95 | 7.55 |
| Total in selected region | 0.044 | 179.13 | 13.38 |
| Brightest Pixel (single exposure) (at 2465.60 Å) | 0.014 | 28.90 | |
| Count rate entire detector | 2,121.398 | ||
| Buffer Time (sec) | 942.77 | ||
| 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 | 22.530 | 45,826.182 | |
| Background (sky+dark) | 2,098.867 | 4,269,096.34 | |
| Encircled energy fraction | 0.85 | ||
| 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): | Milky Way Diffuse (Rv=3.1) = 0.034 applied before normalization |
| Normalization: | Renormalized to abmag = 20.0 in filter Sloan/R |
| 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 27.1
