ETC Request ID: STIS.sp.1370834
Exposure time (seconds) = 1,960.0000 at wavelength 1222.00 Å
gives: SNR = 0.0000 (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 | 1.085e-15 | 4.25e-12 | 2.06e-06 |
| Background | 0.001 | 4.12 | 2.03 |
| Sky | 2.435e-13 | 9.55e-10 | 3.09e-05 |
| Dark Current | 0.001 | 4.12 | 2.03 |
| Total in selected region | 0.001 | 4.12 | 2.03 |
| Brightest Pixel (single exposure) (at 1215.70 Å) | 0.005 | 10.58 | |
| Count rate entire detector | 170.183 | ||
| Buffer Time (sec) | 11,752.05 | ||
| 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 | 3.058e-12 | 5.993e-09 | |
| Background (sky+dark) | 170.183 | 333,558.85 | |
| Encircled energy fraction | 0.76 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | 1222 |
| Grating: | [G140M] R ~ 10000 |
| Aperture: | 52X0.05 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | Kurucz Models M2V 3500 4.6 |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 8.251 in filter Johnson/K |
| 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
