ETC Request ID: STIS.sp.1152539
Requested Signal/Noise Ratio = 10.000 at wavelength 2800.00 Å (per resolution element)
gives: Time = 331.8520 seconds
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 | 0.161 | 106.55 | 10.32 |
| Background | 0.011 | 6.98 | 2.64 |
| Sky | 2.270e-05 | 0.02 | 0.12 |
| Dark Current | 0.011 | 6.97 | 2.64 |
| Total in selected region | 0.171 | 113.54 | 10.66 |
| Brightest Pixel (single exposure) (at 2798.40 Å) | 0.102 | 33.94 | |
| Count rate entire detector | 1,602.679 | ||
| Buffer Time (sec) | 1,247.91 | ||
| 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 | 12.410 | 4,118.335 | |
| Background (sky+dark) | 1,590.269 | 527,733.99 | |
| Encircled energy fraction | 0.87 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | |
| Grating: | [G230L] R ~ 500 |
| Aperture: | 52X2 |
| Target: [point source] | |
| Spectrum: | User uploaded spectrum: muscles_M5.csv |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to abmag = 21.2 in filter Galex/NUV |
| 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
