ETC Request ID: STIS.sp.826457
Requested Signal/Noise Ratio = 30.000 at wavelength 1450.00 Å (per resolution element)
gives: Time = 2,463.2146 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 pix) | (2.0 pix resel x pix) | |
| Source | 0.211 | 1,038.76 | 32.23 |
| Background | 0.001 | 5.17 | 2.27 |
| Sky | 2.947e-14 | 1.45e-10 | 1.20e-05 |
| Dark Current | 0.001 | 5.17 | 2.27 |
| Total in selected region | 0.212 | 1,043.93 | 34.63 |
| Brightest Pixel (single exposure) (at 1344.93 Å) | 0.072 | 177.46 | |
| Count rate entire detector | 7,636.258 | ||
| Buffer Time (sec) | 261.91 | ||
| 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 | 4,505.321 | 11,097,571.685 | |
| Background (sky+dark) | 157.420 | 387,759.99 | |
| Encircled energy fraction | 0.94 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | 1425 |
| Grating: | [E140M] R ~ 45800 |
| Aperture: | 0.2X0.2 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | Castelli-Kurucz Models O7V 37000 4.0 |
| Extinction E(B-V): | Milky Way Diffuse (Rv=3.1) = 0.56 applied before normalization |
| Normalization: | Renormalized to vegamag = 10.09 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
