ETC Request ID: STIS.sp.826568
Exposure time (seconds) = 200.0000 at wavelength 2400.00 Å
gives: SNR = 24.1462 (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 pix) | (2.0 pix resel x pix) | |
| Source | 1.468 | 587.21 | 24.23 |
| Background | 0.011 | 4.20 | 2.05 |
| Sky | 5.432e-07 | 2.17e-04 | 0.01 |
| Dark Current | 0.011 | 4.20 | 2.05 |
| Total in selected region | 1.479 | 591.41 | 24.32 |
| Brightest Pixel (single exposure) (at 2460.80 Å) | 0.622 | 124.47 | |
| Count rate entire detector | 2,706.080 | ||
| Buffer Time (sec) | 739.08 | ||
| 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 | 1,131.487 | 226,297.440 | |
| Background (sky+dark) | 1,574.593 | 314,918.63 | |
| Encircled energy fraction | 0.86 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | |
| Grating: | [G230L] R ~ 500 |
| Aperture: | 52X0.2 |
| Target: [point source] | |
| Spectrum: | Pickles Models B1V 22387.2K |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 16.0 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 24.2
