ETC Request ID: STIS.sp.203838
Exposure time (seconds) = 180.0000 at wavelength 7569.00 Å
gives: SNR = 51.1305 (per resolution element)
gives: Time to Saturation (for a single exposure) = 3,059.79 seconds
Table of Source and Noise Counts per Pixel
| Detailed Information | Count rate | Total counts | Associated noise |
| (e-/s) | (e-) | (e-) | |
| Counts (box 7 pixels high) | (1 pix x pix) | (2.0 pix resel x pix) | |
| Source | 9.263 | 3,334.59 | 57.75 |
| Background | 0.113 | 40.63 | 6.37 |
| Sky | 1.519e-04 | 0.05 | 0.23 |
| Dark Current | 0.113 | 40.57 | 6.37 |
| Read Out | 29.63 | ||
| Total in selected region | 9.376 | 3,375.22 | 65.22 |
| Brightest Pixel (single exposure) (at 6997.55 Å) | 10.785 | 970.65 | |
|
|
|||
| Global Count Rates | |||
| Source only | 23,454.973 | 4,221,895.122 | |
| Background (sky+dark) | 17,280.565 | 3,110,501.68 | |
| Encircled energy fraction | 0.87 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | CCD |
| Central Wavelength: | 7283 |
| Grating: | [G750M] R ~ 5000 |
| Aperture: | 52X2 |
| Gain: | 1.0 |
| # Frames: | 2 |
| Binning: | |
| Dark: |
| Target: [point source] | |
| Spectrum: | Standard HST Star Spectra AGK+81°266 (sdO, 11.94) |
| 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 19.2
