ETC Request ID: COS.sp.642302
Requested Signal/Noise Ratio = 10.000 at wavelength 1310.00 Å (per resolution element)
gives: Time = 1,163.6721 seconds
Table of Source and Noise Counts per Pixel
| Detailed Information | Count rate | Total counts | Associated noise |
| (counts/s) | (counts) | (counts) | |
| Counts (box 35 pixels high) | (1 pix x pix) | (6 pix resel x pix) | |
| Source | 0.014 | 100.99 | 10.05 |
| Background | 1.435e-04 | 1.00 | 1.00 |
| Sky | 4.865e-12 | 3.40e-08 | 1.84e-04 |
| Dark Current | 1.435e-04 | 1.00 | 1.00 |
| Total in selected region | 0.015 | 101.99 | 10.10 |
| Brightest Pixel (single exposure) (at 1216.19 Å) | 0.106 | 123.27 | |
| Brightest Pixel in Segment A (at 1355.47 Å) | 0.002 | ||
| Brightest Pixel in Segment B (at 1216.19 Å) | 0.106 | ||
| Count rate entire detector | 763.929 | ||
| Count rate Segment A | 248.309 | ||
| Count rate Segment B | 515.620 | ||
| Buffer Fill Time (sec) | 3,087 | ||
| For APT purposes, the recommended buffer time is 2/3 of the buffer fill time calculated above. Please refer to Chapter 5.4 in the COS Instrument Handbook for more details. | |||
| Encircled energy fraction | 1.00 | ||
| Instrument name: | COS |
| Mode: | spectroscopic |
| Detector: | FUV |
| Central Wavelength: | 1309 |
| Grating: | [G130M] Grating (R ~ 20,000 - 24,000) |
| Aperture: | Primary Science Aperture |
| Target: [point source] | |
| Spectrum: | Flat in units of Fλ |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 14.0 in filter WFC3/UVIS1/F218W |
| Redshift: | None |
| Emission Lines: | None |
| Selected background: | |
| Sky Background: | |
| Earth Shine: | Average |
| Zodiacal Light: | Average |
| Air Glow: | Average |
Table of Source and Noise Counts per Pixel
These results were computed using: ETC version 22.2
