ETC Request ID: STIS.sp.1365204
Exposure time (seconds) = 2,000.0000 at wavelength 2800.00 Å
gives: SNR = 30.7535 (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 7 pixels high) | (1 pix x 7 pix) | (2 pix resel x 7 pix) | |
| Source | 0.250 | 998.82 | 31.60 |
| Background | 0.014 | 56.01 | 7.48 |
| Sky | 3.644e-06 | 0.01 | 0.12 |
| Dark Current | 0.014 | 56.00 | 7.48 |
| Total in selected region | 0.264 | 1,054.83 | 32.48 |
| Brightest Pixel (single exposure) (at 2699.20 Å) | 0.156 | 312.05 | |
| Count rate entire detector | 2,296.464 | ||
| Buffer Time (sec) | 870.90 | ||
| 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. | |||
|
|
|||
| Global Count Rates | |||
| Source only | 195.017 | 390,033.898 | |
| Background (sky+dark) | 2,101.447 | 4,202,893.68 | |
| Encircled energy fraction | 0.87 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | |
| Grating: | [G230L] R ~ 500 |
| Aperture: | 52X0.5 |
| Target: [point source] | |
| Spectrum: | User uploaded spectrum: daz7903_804_bin.etc |
| 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 27.2
