ETC Request ID: STIS.sp.1430898
Requested Signal/Noise Ratio = 100.000 at wavelength 2300.00 Å (per resolution element)
gives: Time = 917.5785 seconds
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 | 5.473 | 10,044.23 | 100.22 |
| Background | 0.024 | 44.43 | 6.67 |
| Sky | 9.410e-06 | 0.02 | 0.13 |
| Dark Current | 0.024 | 44.41 | 6.66 |
| Total in selected region | 5.497 | 10,088.66 | 100.44 |
| Brightest Pixel (single exposure) (at 2654.40 Å) | 5.018 | 4,604.62 | |
| Count rate entire detector | 10,356.785 | ||
| Buffer Time (sec) | 193.11 | ||
| 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 | 8,032.697 | 7,370,629.720 | |
| Background (sky+dark) | 2,324.088 | 2,132,533.41 | |
| Encircled energy fraction | 0.79 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | |
| Grating: | [G230L] R ~ 500 |
| Aperture: | 52X2 |
| Target: [point source] | |
| Spectrum: | Pickles Models B5-7V 14125.4K |
| Extinction E(B-V): | Milky Way CCM (Rv=4.0) = 0.41 applied before normalization |
| Normalization: | Renormalized to vegamag = 11.51 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 28.1
