ETC Request ID: STIS.sp.937007
Exposure time (seconds) = 1,800.0000 at wavelength 2500.00 Å
gives: SNR = 9.9885 (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 2 pixels high) | (1 pix x pix) | (2.0 pix resel x pix) | |
| Source | 0.031 | 110.70 | 10.52 |
| Background | 0.003 | 12.12 | 3.48 |
| Sky | 3.676e-04 | 1.32 | 1.15 |
| Dark Current | 0.003 | 10.80 | 3.29 |
| Total in selected region | 0.034 | 122.82 | 11.08 |
| Brightest Pixel (single exposure) (at 2920.00 Å) | 0.251 | 451.59 | |
| Count rate entire detector | 1,688.557 | ||
| Buffer Time (sec) | 1,184.44 | ||
| 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 | 98.516 | 177,328.148 | |
| Background (sky+dark) | 1,590.041 | 2,862,073.67 | |
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | |
| Grating: | [G230L] R ~ 500 |
| Aperture: | 52X2 |
| Target: [extended source] | |
| Source diameter (arcsec): | 0.06 |
| Spectrum: | User uploaded spectrum: trailing_diffuse.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 25.1.1
