ETC Request ID: STIS.sp.1009948
Exposure time (seconds) = 1,250.0000 at wavelength 1500.00 Å
gives: SNR = 42.7289 (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 | 0.731 | 1,828.38 | 42.76 |
| Background | 0.001 | 2.63 | 1.62 |
| Sky | 4.630e-12 | 1.16e-08 | 1.08e-04 |
| Dark Current | 0.001 | 2.63 | 1.62 |
| Total in selected region | 0.732 | 1,831.00 | 42.79 |
| Brightest Pixel (single exposure) (at 1314.90 Å) | 0.480 | 599.81 | |
| Count rate entire detector | 1,145.129 | ||
| Buffer Time (sec) | 1,746.53 | ||
| 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 | 874.691 | 1,093,363.835 | |
| Background (sky+dark) | 270.438 | 338,047.91 | |
| Encircled energy fraction | 0.84 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | |
| Grating: | [G140L] R ~ 1000 |
| Aperture: | 52X0.2 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | Non-stellar Objects SSP 5 Myr Z=0.08 BC [91.0, 1600000.0 Å] |
| Extinction E(B-V): | Milky Way Diffuse (Rv=3.1) = 0.3 applied before normalization |
| Normalization: | Flux 1.1e-14 flam at 4000.0 Å |
| 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 25.2
