ETC Request ID: STIS.ta.1297466
Exposure time (seconds) = 1.5000
gives: SNR = 121.5863
gives: Time to Saturation (for a single exposure) = 18.03 seconds
Exposure time calculation HAD WARNINGS.
WARNING MESSAGE: Partial overlap between instrument throughput band and target spectrum. Please doublecheck the wavelength range covered by the selected spectrum, and the instrument documentation for the selected filter.
| Detailed Information | Count rate | Total counts | Associated noise |
| (e-/s) | (e-) | (e-) | |
| Counts (box of 32 x 32 pixels) | |||
| Source | 27,271.934 | 40,907.90 | 202.26 |
| Background | 25.601 | 38.40 | 6.20 |
| Sky | 0.001 | 2.11e-03 | 0.05 |
| Dark Current | 25.600 | 38.40 | 6.20 |
| Read Out | 268.80 | ||
| Total in selected region | 27,297.535 | 40,946.30 | 336.45 |
| Brightest Pixel (single exposure) | 6,656.010 | 9,984.02 | |
|
|
|||
| Global Count Rates | |||
| Source only | 28,873.174 | 43,309.761 | |
| Background (sky+dark) | 26,214.401 | 39,321.60 | |
|
|
|||
| Background per unit area | |||
| Sky Background (arcsec-2) | 0.141 | 0.211 | |
| Dark Current (arcsec-2) | 10.000 | 15.000 | |
| Extraction region | |||
| box of 32 x 32 pixels | |||
| Effective Sky Area (pixels) | 4.00 | ||
| Fraction of flux | 0.94 | ||
| Fraction of flux in brightest pixel | 0.23 | ||
| Effective Wavelength | 5867.39 Å | ||
| Instrument name: | STIS |
| Mode: | Target Acquisition |
| Detector: | CCD |
| Acquisition Mode: | ACQ/PEAK |
| Aperture: | 0.2X0.05ND |
| Gain: | 4.0 |
| # Frames: | 1 |
| Binning: | 1 |
| Dark: | medium |
| Target: [point source] | |
| Spectrum: | User uploaded spectrum: t5500feh150.dat |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 9.02 in filter Johnson/V |
| Redshift: | None |
| Emission Lines: | None |
| Selected background: | |
| Sky Background: | |
| Level: |
These results were computed using: ETC version 26.2
