ETC Request ID: STIS.sp.1454458
Exposure time (seconds) = 4,800.0000 at wavelength 1425.00 Å
gives: SNR = 19.9646 (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 | 0.049 | 471.28 | 21.71 |
| Background | 0.001 | 10.08 | 3.17 |
| Sky | 2.137e-14 | 2.05e-10 | 1.43e-05 |
| Dark Current | 0.001 | 10.08 | 3.17 |
| Total in selected region | 0.050 | 481.36 | 23.61 |
| Brightest Pixel (single exposure) (at 1555.01 Å) | 0.065 | 313.68 | |
| Count rate entire detector | 3,002.288 | ||
| Buffer Time (sec) | 666.16 | ||
| 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 | 1,713.777 | 8,226,129.630 | |
| Background (sky+dark) | 157.418 | 755,606.71 | |
| Encircled energy fraction | 0.94 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | 1425 |
| Grating: | [E140M] R ~ 45800 |
| Aperture: | 0.2X0.2 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | User uploaded spectrum: sk68d15_sed_new.fits |
| 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 28.2
