ETC Request ID: STIS.sp.517958
Exposure time (seconds) = 885.0000 at wavelength 1356.00 Å
gives: SNR = 0.4857 (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 2 pixels high) | (1 pix x pix) | (2.0 pix resel x pix) | |
| Source | 2.774e-04 | 0.49 | 0.70 |
| Background | 3.000e-04 | 0.53 | 0.73 |
| Sky | 0.000e+00 | 0.00e+00 | 0.00e+00 |
| Dark Current | 3.000e-04 | 0.53 | 0.73 |
| Total in selected region | 5.774e-04 | 1.02 | 1.01 |
| Brightest Pixel (single exposure) (at 1215.90 Å) | 0.006 | 4.97 | |
| Count rate entire detector | 184.114 | ||
| Buffer Time (sec) | |||
| 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 | 26.828 | 23,742.618 | |
| Background (sky+dark) | 157.286 | 139,198.46 | |
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | |
| Grating: | [G140L] R ~ 1000 |
| Aperture: | 52X2 |
| Glow region: |
| Target: [extended source] | |
| Source diameter (arcsec): | 1.7 |
| Spectrum: | User uploaded spectrum: o53k01060_out.dat |
| Extinction E(B-V): | None |
| Normalization: | None |
| 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 21.2.2
