ETC Request ID: STIS.sp.1014160
Exposure time (seconds) = 5,122.0000 at wavelength 1400.00 Å
gives: SNR = 20.4148 (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 | 0.042 | 427.25 | 20.67 |
| Background | 0.001 | 10.76 | 3.28 |
| Sky | 2.445e-12 | 2.50e-08 | 1.58e-04 |
| Dark Current | 0.001 | 10.76 | 3.28 |
| Total in selected region | 0.043 | 438.01 | 20.93 |
| Brightest Pixel (single exposure) (at 1217.70 Å) | 0.022 | 113.28 | |
| Count rate entire detector | 304.761 | ||
| Buffer Time (sec) | 6,562.52 | ||
| 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. | |||
|
|
|||
| Global Count Rates | |||
| Source only | 34.323 | 175,801.023 | |
| Background (sky+dark) | 270.438 | 1,385,185.12 | |
| Encircled energy fraction | 0.82 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | |
| Grating: | [G140L] R ~ 1000 |
| Aperture: | 52X0.2 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | Flat in units of Fλ |
| Extinction E(B-V): | None |
| Normalization: | Flux 1.7e-15 flam at 1400.0 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
