ETC Request ID: STIS.sp.998154
Exposure time (seconds) = 2,372.0000 at wavelength 2000.00 Å
gives: SNR = 34.7029 (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 | 0.264 | 1,252.20 | 35.39 |
| Background | 0.011 | 49.81 | 7.06 |
| Sky | 5.950e-08 | 2.82e-04 | 0.02 |
| Dark Current | 0.011 | 49.81 | 7.06 |
| Total in selected region | 0.274 | 1,302.01 | 36.08 |
| Brightest Pixel (single exposure) (at 2595.20 Å) | 0.908 | 2,153.87 | |
| Count rate entire detector | 2,710.242 | ||
| Buffer Time (sec) | 737.94 | ||
| 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 | 1,135.636 | 2,693,727.447 | |
| Background (sky+dark) | 1,574.606 | 3,734,966.44 | |
| Encircled energy fraction | 0.84 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | |
| Grating: | [G230L] R ~ 500 |
| Aperture: | 52X0.2 |
| Target: [point source] | |
| Spectrum: | User uploaded spectrum: smooth_slsn1.dat |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 14.0 in filter Johnson/U |
| Redshift: | z=0.03 |
| 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
