ETC Request ID: STIS.sp.1396291
Requested Signal/Noise Ratio = 50.000 at wavelength 2385.00 Å (per resolution element)
gives: Time = 27,627.5071 seconds
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 | 0.059 | 3,237.43 | 56.90 |
| Background | 0.015 | 850.93 | 29.17 |
| Sky | 3.919e-09 | 2.17e-04 | 0.01 |
| Dark Current | 0.015 | 850.93 | 29.17 |
| Total in selected region | 0.074 | 4,088.36 | 64.75 |
| Brightest Pixel (single exposure) (at 2793.01 Å) | 0.085 | 2,339.66 | |
| Count rate entire detector | 5,184.260 | ||
| Buffer Time (sec) | 385.78 | ||
| 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 | 2,339.342 | 64,630,182.377 | |
| Background (sky+dark) | 2,306.871 | 63,733,088.13 | |
| 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: | User uploaded spectrum: t6250feh250.dat |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 10.83 in filter Johnson/V |
| Redshift: | z=0.01 |
| 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
