ETC Request ID: STIS.sp.1395746
Exposure time (seconds) = 2,076.0000 at wavelength 2376.00 Å
gives: SNR = 9.4790 (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 11 pixels high) | (1 pix x 11 pix) | (2 pix resel x 11 pix) | |
| Source | 0.036 | 150.03 | 12.25 |
| Background | 0.024 | 100.48 | 10.02 |
| Sky | 9.386e-07 | 3.90e-03 | 0.06 |
| Dark Current | 0.024 | 100.48 | 10.02 |
| Total in selected region | 0.060 | 250.51 | 15.83 |
| Brightest Pixel (single exposure) (at 2598.40 Å) | 0.018 | 37.14 | |
| Count rate entire detector | 2,339.218 | ||
| Buffer Time (sec) | 854.99 | ||
| 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 | 30.627 | 63,582.085 | |
| Background (sky+dark) | 2,308.591 | 4,792,635.36 | |
| Encircled energy fraction | 0.79 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | |
| Grating: | [G230L] R ~ 500 |
| Aperture: | 52X0.2 |
| Target: [point source] | |
| Spectrum: | Black body at 20000.0K |
| Extinction E(B-V): | Milky Way Diffuse (Rv=3.1) = 0.0939 applied before normalization |
| Normalization: | Renormalized to abmag = 19.5 in filter Sloan/R |
| Redshift: | z=0.015 |
| Emission Lines: | None |
| Selected background: | |
| Sky Background: | |
| Level: |
Table of Source and Noise Counts per Pixel
These results were computed using: ETC version 28.1
