ETC Request ID: STIS.sp.1003644
Exposure time (seconds) = 2,300.0000 at wavelength 3050.00 Å
gives: SNR = 18.8374 (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 | 0.088 | 404.64 | 20.12 |
| Background | 0.011 | 48.30 | 6.95 |
| Sky | 6.426e-08 | 2.96e-04 | 0.02 |
| Dark Current | 0.011 | 48.30 | 6.95 |
| Total in selected region | 0.098 | 452.94 | 21.48 |
| Brightest Pixel (single exposure) (at 2648.51 Å) | 0.066 | 151.30 | |
| Count rate entire detector | 3,926.114 | ||
| Buffer Time (sec) | 509.41 | ||
| 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 | 1,913.210 | 4,400,383.064 | |
| Background (sky+dark) | 1,572.868 | 3,617,595.46 | |
| Encircled energy fraction | 0.93 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | 2707 |
| Grating: | [E230M] R ~ 30000 |
| Aperture: | 0.2X0.2 |
| Target: [point source] | |
| Spectrum: | Kurucz Models A3V 8720 4.2 |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 11.2 in filter Johnson/V |
| 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
