ETC Request ID: STIS.sp.1026387
Requested Signal/Noise Ratio = 1.000 at wavelength 2300.00 Å (per resolution element)
gives: Time = 22,588.4810 seconds
Table of Source and Noise Counts per Pixel
| Detailed Information | Count rate | Total counts | Associated noise |
| (counts/s) | (counts) | (counts) | |
| Counts (box 2 pixels high) | (1 pix x 2 pix) | (2 pix resel x 2 pix) | |
| Source | 2.690e-04 | 12.15 | 3.49 |
| Background | 0.003 | 135.55 | 11.64 |
| Sky | 4.345e-07 | 0.02 | 0.14 |
| Dark Current | 0.003 | 135.53 | 11.64 |
| Total in selected region | 0.003 | 147.70 | 12.15 |
| Brightest Pixel (single exposure) (at 2456.00 Å) | 0.002 | 40.99 | |
| Count rate entire detector | 1,578.656 | ||
| Buffer Time (sec) | 1,266.90 | ||
| 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 | 1.436 | 32,446.543 | |
| Background (sky+dark) | 1,577.220 | 35,627,001.29 | |
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | |
| Grating: | [G230L] R ~ 500 |
| Aperture: | 52X0.5 |
| Target: [extended source] | |
| Source diameter (arcsec): | 0.5 |
| Spectrum: | Flat in units of Fν |
| Extinction E(B-V): | None |
| Normalization: | Flux 1e-16 flam at 2000.0 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
