ETC Request ID: STIS.sp.821477
Requested Signal/Noise Ratio = 141.000 at wavelength 5258.00 Å (per resolution element)
gives: Time = 3,497.8313 seconds
gives: Time to Saturation (for a single exposure) = 7,505.88 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 | 3.105 | 21,723.30 | 147.39 |
| Background | 0.134 | 936.70 | 30.61 |
| Sky | 8.968e-04 | 6.27 | 2.50 |
| Dark Current | 0.133 | 930.42 | 30.50 |
| Read Out | 32.81 | ||
| Total in selected region | 3.239 | 22,660.00 | 154.07 |
| Brightest Pixel (single exposure) (at 5016.80 Å) | 4.397 | 7,689.20 | |
|
|
|||
| Global Count Rates | |||
| Source only | 3,185.967 | 11,143,976.125 | |
| Background (sky+dark) | 20,004.392 | 69,971,989.53 | |
| Encircled energy fraction | 0.93 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | CCD |
| Central Wavelength: | |
| Grating: | [G430L] R ~ 500 |
| Aperture: | 52X0.2 |
| Gain: | 1.0 |
| # Frames: | 2 |
| Binning: | dispersion: 1, spatial: 1 |
| Dark: |
| Target: [point source] | |
| Spectrum: | User uploaded spectrum: Mrk493_forETC_daeseong.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 24.2
